This shows a list of the improvements and changes made in various different versions of Espruino.

     2v21 : nRF52: free up 800b more flash by removing vector table padding
            Throw Exception when a Promise tries to resolve with another Promise (#2450)
            Add 'lcdBufferPtr' to Bangle.getOptions
            Allow E.nativeCall to take 32 bit floats (eg for Inline C)
            Add built-in Stepper motor handling with the `Stepper` class (if enabled in build)
            Fix issue requesting constructor of builtin before the class itself has been accessed (fix #2451)
            Allow pretokenisation to store raw, unencoded Strings for speed/efficiency
            Automatic decoding and pretokenisation of 'atob(".....")' strings
            Pull out pretokenisation on SAVE_ON_FLASH boards (pretokenised code can be executed, it's just not tokenised in Espruino - saves 1kb)
            Bangle.js: Fix out of bounds coordinates in LCD code that caused screen corruption on newer GCC builds (#2455)
            Bangle.js2: In flash bootloader, don't store flash write code in RAM (no need) (fix #2458)
            Remove 65535-char max native string length restriction introduced in 2v20 on devices that could support more like Bangle.js 2
            E.memoryArea(0, ...) now returns `undefined`
            Fix issue using Flat/Flash/Native Strings to create fields in objects
            Optimise pretokenised Strings so we load very short strings direct to RAM
            Add jsvGet...Child functions to replace common call patterns - saves 280 bytes on Pico
            Fix issue with g.wrapString when running on flash-based strings
            Fix lock leak when using flat/flash/native strings as object indices
            Fix g.wrapString lockup if wrap width is less than the character width
            Fix potential for crash after ReferenceError during function declaration (fix #2457)
            STM32: (Original/Pico/WiFi) if USB connected but PC not receiving data, throw away USB data rather than blocking (fix #2446)
            Move commonly used sequences of function calls into functions (eg jsvRemoveChild,jsvUnLock -> jsvRemoveChildAndUnLock) - saves ~200b

     2v20 : Ensure String.charCodeAt returns NaN for out of bounds chars
            Bangle.js2: When rendering overlays, *do not* use the current FG/BG color for 1 bit overlays
            nRF52 SDK15: Fix UART when >1 central link enabled
            Bangle.js2: Allow 2 central links at once
            Fix `if (0);"test"||fail()` 2v19 regression - strings after if(0) didn't get interpreted 
            Ensure eval("1;;;")==1 - eval("1;")==1 before, but not eval("1;;")            
            Ensure AssignmentExpr returns the value of LHS, not the LHS. `(a=2)=3` now fails (as per spec)
            Ensure default args for arrow functions fail with error `(a,b=3)=>a+b` now fails (until default args get added)
            nRF52: bootloader asks for connection interval 7.5->30ms now, not just 15ms. Should improve DFU on iOS 16 which doesn't honour 15ms request
            Fix unicode in object keys when UTF8 support enabled, eg.  {'\u00e4':1}
            Bangle.js: Change order of items in the Recovery Menu (hold BTN at boot) to put more common options first
            Tidying up error messages (no trailing '.' or '\n'), making almost-similar error messages the same 
            Fix issue using `String.concat` with flash strings (fix #2268)
            jsvFindChildFromString enhancement - adds 10% performance on minified code
            Remove createChild argument from jsvFindChildFromString, add jsvFindOrAddChildFromString instead
            Add ES9 optional catch binding (`try {} catch {}`) 
            Bangle.js: Fix terminal's repeated call to '.flip' that broke double buffering on Bangle.js 1
            JIT: Ensure ternary block skips 'named' variables (and references them correctly)
            Fix for UNFINISHED REGEX syntax error when parsing `true / false` (fix #2424)
            Allow `throw undefined` to still show an exception in the REPL (fix #2423)
            When parsing function declarations, don't interpret the strings inside them
            Bangle.js2: Fix spurious tap events when HRM enabled by changing threshold
            Reinstate `if (0);"test"` fix after f87a53c accidentally reverted it
            Bangle.js2: Do a soft reset every time we start the SPL06 pressure sensor (stops occasional sensor lockup)
            Graphics: wrapString will now wrap lines on comma, dot, dash, and between images
            Graphics: Improve PBF font loading to handle v3, plus Espruino extension to handle >10k glyphs in one file
            Fix unicode in object accesses, eg c["\u00FC"]=42 (fix #2429)
            Storage: Storage.writeJSON now escapes with a more compact `\x##`/`\#` character escape notation (still valid JSON)
              This allows Espruino to save non-unicode strings with characters in the unicode range, and to also re-load them as non-unicode
            Graphics: Graphics.stringMetrics now returns 'unrenderableChars/imageCount/maxImageHeight' for much more info about rendering strings
            Graphics: wrapString now also wraps on slashes (to allow wrapping of URLs)
            nRF5x: when connecting to other devices, allow a slave latency of 2 (might increase reliability)
            Fix `Got [ERASED] expecting X` when storage compacts while executing a function *in* storage on non-Bangle devices (fix #2431)
            JIT: Fix crashes when code got too big for simple 2-byte jump instructions (fix #2433)
            JIT: Fixed/re-added while loops (and DO for huge loops)
            Storage: Storage.writeJSON now skips quotes on alphanumeric field names to speed up settings read/write
            Graphics: fix drawing image in string inside cliprect when rotated (fix #2435)
            Bangle.js: Add wakeOnDoubleTap to Bangle.setOptions, "lock" event now has second argument giving a reason (if known)
            nRF5x: On SDK15 ensure nonconnectable+nonscannable advertisements are not sent as extended
            nRF52840: jsvReadVRef now reads VDDH value (not VDD, which is almost always internally regulated) 
            Ensure we error if an unsupported byteOffset is supplied to types array constructor (fix #2439)
            I2C: Add I2C.readReg to combine I2C.writeTo+readFrom in an easy/fast way
            Microbit2: Set up SCK/LRCK to unused pins for neopixel to ensure neopixel will work ok
            ESP8266/others: Fix ArrayBuffers with 12 bit JsVars (previously they overflowed)
            Ensure E.setDST disables E.setTimeZone, and vice-versa. 
            Added console.debug/info/warn/error as aliases of console.log
            nRF5x: Fix INVALID_PARAM error when connecting to other BLE device when maxInterval or NRF.setLowPowerConnection specified 
            Bangle.js2: Add 'Test' option to factory reset menu, and Bangle.showTestScreen()
            Added Pin.pulse/pwm/analog as aliases of digitalPulse,analogWrite,analogRead

     2v19 : Fix Object.values/entries for numeric keys after 2v18 regression (fix #2375)
            nRF52: for SD>5 use static buffers for advertising and scan response data (#2367)
            Bangle.js: Add Bangle.showRecoveryMenu, and if storage is corrupt then show it rather than automatically doing factory reset
            Fix Graphics.createImage if the last character is a newline
            Graphics: Fix issue if drawImage given a non-image
            Added optional Unicode support (Linux/Bangle.js only currently)
            Added optional PBF font loading support (Linux/Bangle.js only currently)
            Fix recent regression in switch handling caused by Strings only being interpreted when executing
            Ensure [].length is a constant (we don't support assignment)
            Bangle.js: showMenu now won't redraw menu items if the onchange handler changed the menu
            Graphics: Add Espruino-specific extension to PBF font loader to handle 2bpp
            Graphics: Improve blendColor when outputting to 2/4/8bpp Graphics
            Graphics: Allow setFont(...) to work with >1bpp and PBF fonts
            Add Object.addListener(same as '.on') and prependListener to allow a handler to be added first
            Fix regression with g.wrapString and long UTF8 strings (fix #2385)
            Bangle.js2: Fix reusing touch coordinates under high load (fix #2374)
            Bangle.js: setUI now has a 'redraw' argument to allow apps to provide a way to redraw themselves
            Now executes ".bootPowerOn" from Storage on first boot after power restored
            Bangle.js: Add Bangle.setBacklight(), Bangle.backlight event, Bangle.isBacklightOn() and allow input when lcd off if lockTimeout is 0 (fix #2383)
            Added NRF.eraseBonds() to allow peer manager info to be removed (other than by holding all buttons down)
            nRF52840: Fix potential 'SPI Send Error 17' SPI lockup
            Bangle.js2: Fix number selector first draw in menu after 'redraw' argument added
            Bangle.js2: number selector now supports tapping at top/bottom to increment/decrement value
            Storage: StorageFiles don't store addr/len any more, they look up the file for each write (safer, and fast now we have a filename cache)
            Graphics: g.dump() will now work without allocating huge buffers
            nRF52: Added CTS (Current Time Service) support to ANCS/AMS code
            nRF52: Add NRF.on('error') event to provide an easy way to check for Softdevice errors
            If a jshardware op is interrupted, report "Interrupted in X" and not "Timeout on X"
            Ensure Ctrl-C/holding button cannot break out of compaction
            Bangle.js: don't compact storage if less than 10% battery
            Support for Overlays when SPILCD driver used
            Bangle.js2: Show a message on screen when compacting storage (fix #2391)
            Storage: Compaction now starts from the last uncompacted page - faster if only partly compacted (#2391)
            Graphics: drawImage now avoids getting pixels top/bottom of an image that might be cropped/offscreen
            Bangle.js: Handle pushing events via the event queue (allows events to be queued rather than lost)
            Bangle.js2: Allow HRM environment sensor data to be pushed, also add flags for disabling auto exposure and wear detect
            Fix failure to run JIT caused by String interpreting optimisation
            JIT: JIT failures now don't stop execution of subsequent commands - function is just executed as normal JS
            JIT: Fix scoping of JITed functions (they can now access vars in the scope they were defined in)
            Improve execution speed by not parsing strings when skipping blocks
            Graphics: drawImage(...,{filter:1}) added to allow smooth downscaling of images
            Graphics: fix for images in drawString when completely offscreen (regression after drawImage optimisation)
            Storage: Output progress on FactoryReset and Compact
            nRF5x: Ensure we don't start advertising immediately after softdevice restart if NRF.sleep() was used
            Bangle.js2: Ensure `HRM-raw.raw` is set correctly after we moved to binary hrm algorithm
            nRF5x: Add `NRF.on("passkey", ...)` to allow passkey pairing with `NRF.setSecurity({mitm:1, display:1});`
            nrf52: Allow disabling pairing with `NRF.setSecurity({pair:0})`
            Allow E.pipe to pipe from Strings, remove pipe's internal `position` counter (fix #2352)
            Bangle.js 1: remove OneWire,I2C,SPI as it uses too much flash space to exist alongside UTF8+Tensorflow+JIT on nRF52
            ARM: Apply -fmerge-all-constants to the build (saves ~1kb)
            Bangle.js: If screen is rotated, also rotate accelerometer and magnetometer values
            Microbit1: don't include text versions of Bluetooth error messages (just the error number) to save some memory
     2v18 : Fix drawString with setClipRect with 90/270-degree rotation (fix #2343)
            Pico/Wifi: Enabled JIT compiler
            Ensure that if JIT fails, we correctly remove just the "jit" tag and treat the function as normal JS
            nRF52: Add NRF.setAdvertising({},{whenConnected:true}) to allow advertisements to be sent while a connection is active
            nRF52: Fix NRF.getSecurityStatus's 'advertising' field (only appeared when connected previously)
            Fix 'ghosting' issue on Welcome screen (forcing timeout/lcdPower/etc at boot could disable the EXTCOMIN toggle)
            nRF52: OneWire accesses are now scheduled with the Timeslot API to avoid the softdevice interfering (fix #1831)
            nRF52: Add NRF.on('bond'/'advertising') events to keep track of BLE status more easily
            Pixl.js: Switch to slower ROM-saving sin/cos/atan/atan2 (running out of free space after JIT enabled)
            Graphics: Ensure fillPoly clips out of range (+/-2048) coordinates
            nRF52: Fix regression after whenConnected:true addition. NRF.wake() will now not start advertising when connected unless whenConnected:true is set.
            STM32: neopixel: Fix small glitches in the output pin just before writes that could throw off APA10x LEDs
            Bangle.js2: Ensure that changing a menu item when half-scrolled off screen doesn't overwrite widgets
            Puck.js: Ensure acc/gyro doesn't cause watch events to be added to the input queue (more efficient)
            Waveform: Fix waveform input/output when not done at system start - Since 2v13 start time was set in the past
            Fix ordering of Pin check in wrapper (so autocomplete and Pin prototype works)
            Bangle.js2: Switched to proprietary heart rate algorithm (from our Open Source version). It just works better. 
            JIT: Implemented do { a } while (b)
            Ensure that for(in), Object.keys and Object.getOwnPropertyNames return array indices as strings (not numbers)
            Fix memory leak when an error happens while parsing function arguments - eg `print(1,2,3,JSON.parse("!%^$^"),123)`
            Bangle.js2: Added Bangle.setOptions({hrmSportMode})
            ESP32: Fix reset() causing meditation error (ref #1777)
            ESP32: Ensure XON/XOFF flow control is enabled            
            ESP32: Advertising name is now 'Espruino abcd'
            ESP32: BLUETOOTH UART IS ENABLED BY DEFAULT - disable with `NRF.setServices({},{uart:false})`
            Bangle.js: GPS event now works even if only GGA NMEA events are enabled (which you might do for speed)
            Add Serial.flush() to allow us to wait for transmission on a device to finish
            Fix for var link corruption when replacing a native function with a normal one (fix #2361)
            Fix memory leak (and assert in debug mode) when iterating over an object with proto with for...of (fix #2360)
            Fix debug assert when reversing an array with non-integer elements (fix #2362)
            Fix debug assert when using instanceof if __proto__ was set to non-object (fix #2363)
            Fix debug assert when creating a function with code that isn't a string (fix #2364)
            Fix debug assert parsing {}=>{} when not executing (fix #2365)
            Fix issue with Graphics.createImage if more than the first line was empty (fix #2296)
            Bangle.js: Now auto-reset compass if it was on while the watch was charging (fix
            Graphics: Added .floodFill method to allow flood fill
            Added E.stopEventPropagation() to allow event propagation to be stopped with multiple X.on('...', ...)
            Graphics: g.drawImage(gfx) now reads palette+transparent fields if they exist in a Graphics object
            Graphics: g.asImage() now reads palette+transparent fields (if they exist) in a Graphics object
            Ensure Graphics uses jswrap_math_sin/jswrap_math_cos (saves ~5k on SAVE_ON_FLASH_MATH builds)
            Modified E.toString to always return a String (not necessarily flat) - fixes occasion errors in Bangle.js clocks that use it when setting up fonts
            Added E.toFlatString (using old E.toString behaviour)
            Ensure Promise.all completes even if empty or containing pre-resolved promises (fix #2371)
            Allow Graphics.createImage to use '.' as a placeholder for an empty area
            Bangle.js: If a Storage file called '.loading' exists, use that instead of the loading screen
            Bangle.js: E.showPrompt now resets background color before clearing the screen
            Bangle.js2: Ensure overlays are flipped when screen is flipped 180 degrees (eg. left-handed mode)
            Bangle.js2: Automatically switch the heart rate algorithm into sport mode when a certain amount of movement is detected

     2v17 : Bangle.js: When reading file info from a filename table, do it in blocks of 8 (20% faster file search)
            Bangle.js2: Increase flash buffer size from 16->32 bytes (5% performance increase)
            ESP32: update esp-idf to v3.3.6
            Bangle.js2: Fix issue where Bangle.getPressure could leave the barometer on
            Bangle.js2: Bootloader update - triple-check CRC after writing firmware and retry if it fails
            Bangle.js2: setUI(updown/leftright) now responds to button on falling (not rising) edge
            If we get an unhandled exception, ensure we keep the stack trace intact
            Array.sort() with undefined elements now puts them at the end of the array (as per spec - #2300)
            Bangle.js1/2: Fix showMenu/showScroller spacing with back if no widgets loaded (ref #2286)
            Bangle.js1: Bangle.setUI({back}) now responds to BTN3 if there were no other watches on buttons
            ESP32: Allow up to 16k vars (if enough memory), allow non-active scan, and remove 30s BLE scan limit
            Graphics: Ensure a scroll inside a cliprect can't go out of bounds (previously it was bounded to screen)
            Puck.js: Fix regression in 2v15/2v16 that stopped Puck.js v1 using magnetometer
            Bangle.js2: Fix scroller overlap with widget bar when scrolled more than the screen's height in one step
            Bangle.js2: Improve touchscreen handling to handle out of range data from the controller on some devices
            Bangle.js: Improve ANCS stability - cancel ongoing tasks if an error is reported
            ESP32: setScan/findDevices/requestDevice now fill in `id` with the mac address followed by private/random/etc as NRF52 does
            ESP32: disconnect event now gives 'reason' (as NRF52)
            ESP32: Bluetooth scanning now uses event queue (fixes MEMORY_BUSY)
            ESP32: Implement E.enableWatchdog
            Speed up tab complete on large ArrayBuffers
            Support for ArrayBuffers over 64k in size
            Fix issue that could cause some variables not to be freed as soon as they weren't needed (requiring GC more often)
            Fix lock leak if out of memory error occurs during 'var' initial assignment
            Graphics: Add color mappings when rendering 3->4bpp and 3->8bpp
            Bangle.js2: make the 4bpp mac palette more saturated to account for the LCD
            ESP32: partition table updated in EspruinoBuildTools to ensure bootloader doesn't mistake js_code/storage for an otadata partition
            ESP32: Add ESP32.setOTAValid(false) to allow the current partition to be marked as invalid (causing 'factory' to be booted into)
            JIT: Arrays can now be defined in JIT code (`[1,2,3]`/etc)
            JIT: Objects can now be defined in JIT code (`{a:2,b:3}`/etc)
            JIT: 'this' can be used in JIT code
            JIT: Support for short-circuit operators && and || (#2313) 
            JIT: Increased compile speed ~5x using iterators for string append
            ESP32: Fix build with asserts enabled
            ESP32: Add BTN1 (D0/BOOT) and LED1 (D2) as these appear to be reasonably common in boards
            Add ability to add custom boot code inside the build with JSMODULESOURCES+=_:bootfile.js
            Pixl.js: Don't load the splash screen if BTN1 and BTN4 held down (for recovery purposes)
            Fix potential lock leaks during out of memory errors
            Graphics: Added g.getVectorFontPolys to allow the underlying polygons behind a vector font to be retrieved
            nRF5x: ensure we only clear pairing data if ALL buttons are pressed at boot to avoid accidental deletion
            Graphics: Fix font clipping on rotated non-square graphics instances (fix #2326)
            Fix jsvDumpLockedVars when flat strings are in memory (
            Fix bool return values when building for 64 bit (fix #2323)
            nRF52: Add support for 7 bit UART tx/rx (and parity) and error if a UART setting can't be honoured (fix #2324)
            Bangle.js2: Fix regression in E.showMenu so you can use menu items with ':undefined' (as in the example in the reference)
            Graphics: Ensure that an error is thrown if a palette is used in >8 bit images. It was previously possible to ask for a palette on a 32 bit image, which caused an overflow
            Fix issue extending a class from a class from a class (fix #1529)
            Added Object.getOwnPropertyDescriptors
            Added Object.fromEntries (fix #2327)
            Ignore whitespace after ':' in HTTP headers (fix #2331)
            Don't allocate RegEx if just scanning over code 
            Don't store String/RegEx data in variables if we're just scanning over code
            Ensure that if possible we create a JsVar Name direct from the underlying string, rather than creating and then converting (#2329)
            Bangle.js2: Fix Compass Z heading (fix #2332)
            Micro:bit 1: remove support for paletted images to free up flash
            Bangle.js: Fix for* functions after #2323 fix
            MakeIntoVariableName now shifts oversize strings around rather than re-allocating, which reduces fragmentation (#2329)
            Fix scopes in `eval` (now uses the current function's scope) - fixes `(function(){eval("var x=42;print(x);")})()` 
            Ensure new StorageFiles have 'len' set to 0
            try...finally block now executes even if we do a 'return/break/continue' inside it (fix #2338)
            Bluetooth: getSecurityStatus now returns 'advertising' field showing if we're advertising or not
            Fix continue when used inside switch statement (fix #2339)
            Storage: Fix issue locating js/.boot0 files on external storage when running with 2 Storage banks (doesn't affect Bangle.js 1/2)

     2v16 : JIT functions now execute in their own function scope (allows arguments)
            Move older 'HY' boards to use `g` for the built-in graphics, not `LCD` (and change docs)
            Fix print(()=>{}) printing 'function (undefined) {}' - saves 1 var for arrow fn without args (fix #2265)
            Bangle.js: Add support for `Bangle.setUI({remove:...})` to allow apps to be unloaded without a full reboot.
            Bangle.js2: Fixed `Bangle.setLCDOverlay(img,x,y)` with negative offsets
            Allow `atob` to accept base64 with whitespace inside it
            Puck.js Lite: remove NFC from build (no NFC on board the Lite version)
            Storage: When using Filename Table, be absolutely sure it's correct before using it (stops hang at startup if storage corrupt)
            Bangle.js: Add Bangle.setOptions({btnLoadTimeout:...}) to allow home button timeout to be configurable
            Bangle.js: A forced interrupt after button held now occurs 0.5s (not 0.1s) after the reboot request
            Bangle.js: Holding the button during storage compact now won't try and break out of it
            Bangle.js: Use 4k/64k/all flash clear commands to make erasing (and hence compact) external flash faster
            Bangle.js2: Add built-in touchscreen calibration
            Bangle.js2: Add fast-path for all-white or all-black full-width graphics fill/clear (24ms -> 2ms)
            Bangle.js2: LCD background flip (send to LCD while returning to execute other code)
            Bangle.js2: Swipe direction is now modified based on g.setRotation
            ESP32: Bluetooth LE tweaks - central mode connects, scans, reads, writes and notifies
            Bluetooth: fix for incorrect Bluetooth task strings shown in some errors
            Bangle.js: showLauncher's 'fast load' now updates __FILE__
            Improve jsvIs* functions (because v->flags is volatile). >5% speed improvement
            Lexer speed improvements
            Bangle.js: Compass 'heading' now provides correct value (without 360-heading) required
            Bangle.js: Remove F_BEEPSET feature flag (now 3 years old)
            Espruino: Ensure flash/native strings really can't be appended to (fix #2282)
            Bangle.js2: Improved 3 bit LCD fill (20% faster)
            process.memory() reports `stackFree` which allows us to easily check if we're ok for recursion
            E.HSBtoRGB can now be called with `E.HSBtoRGB(h,s,b,16)` to return a 16 bit value suitable for Bangle.js/etc
            Bangle.js2: Flip LCD SPI bit order so operations in Espruino can be faster (45% faster fillRect)
            Bangle.js2: Use 8x3bpp block fill with masking (now at least 6x faster than 2v15)
            Fix JIT when overwriting a pre-existing function, JIT now allows `var/let/const`, fix lock leak in function call, fix FOR postinc issue
            JIT compiler now included in MDBT42Q/Pixl.js/Puck.js/Bangle.js 1          
            Bangle.js2: Bangle.setUI remove unused 'touch' mode, ensure 'back' button doesn't overlap if button is already used (fix #2287)
            Bangle.js: Do not clear widget area if only zero width wigets are using it
            Bangle.js: Allow setting remove methods for*
            Bangle.js: Add Bangle.load() and Bangle.showClock() methods
            Graphics: Ensure g.reset() after a custom font was set de-allocates the custom font (fix #2290) 
            Bangle.js: setUI now calls g.reset(), and also protects against recursion in uiRemove
            Bangle.js2: Touched item coordinates in E.showScroller's select callback

     2v15 : Fix issue where `E.toJS("\0"+"0") == '"\00"'` which is just `"\0"`
            Fix issue accessing `arguments` after/inside 'let/const' keyword (fix #2224)
            let/const now don't add a scope if executed in a function outside a block (fix #2225)
            When executing a function, ensure the scope doesn't include a `return` var
            Rename internal return var to fit it inside one JsVar on embedded systems
            nRF52: Added support for 2 concurrent Bluetooth Central connections to Puck.js, Pixl.js, MDBT42Q (fix #1360)
            Bangle.js2: JIT now built in (only enabled for functions prefixed '"jit"')
            E.dumpVariables now outputs more info for variable values
            Puck.js Lite support
            Puck.js: Immediately after flashing new firmware, Puck.js now does a self-test and sets its BLE to PASS or FAIL
            nRF52: Fix recent regression which stopped reconnection after a bluetooth disconnect (fix #2226)
            Bangle.js: Include the 'sched' library in installed apps (needed for alarm) (fix #2229)
            Bangle.js2: Fix text size on buttons when they are tapped in E.showPrompt
            nRF5x: Add 'onWriteDesc' in NRF.setServices - allowing you to know when something subscribed for notifications
            nRF5x: Move advertising_start and restart_softdevice outside of IRQs (MEMORY_BUSY warnings less likely now)
            Bangle.js: Ensure E.showMessage background color comes from theme
            Bangle.js: Add "filename table" support to Bangle.js - avoids slow file read/list when there are many deleted/updated files in Storage (fix #2152)
            Storage: Don't align files <512 bytes to page boundaries - all files now stored in order (ref #2232)
            nRF5x: Call sd_ble_gattc_hv_confirm in response to BLE indications
            Bangle.js2: Make Bangle.setBarometerPower retry twice if it has an I2C error
            Bangle.js2: Fix `NRF.setAdvertising({},{scannable:false})`
            Bangle.js2: Initial long range functionality (via `phy:"coded"` in `NRF.setAdvertising/setScan/requestDevice/findDevices`)
            nRF52: Change from hard -> softfp calling convention (saves a few bytes, more compatible with compiled code)
            Fix 'console.log([1,2,3].splice(0, 1.0))' (fix #2245)
            Bangle.js2: Added `Bangle.setLCDOverlay(img,x,y)` to allow an image to be overlaid on top of screen contents (eg for notifications)
            Fix issue parsing constant decls when not executing (fix #2255)
            Puck.js: Fix Puck.mag() in newest batch of Puck.js 2.1a sometimes returning -32768
            Correctly handle parsing of template literals inside template literals
            Don't store command history if echo=off (eg for Web IDE/App Loader uploads)
            E.defrag now kicks the watchdog (on Bangle.js 2 it can take long enough that the watchdog fires)
     2v14 : Bangle.js2: Fix issue with E.showMenu creating a global `s` variable
            Bangle.js2: Recheck string wrapping after font change inside E.showMenu
            Bangle.js2: Double input buffer size from 1kb to 2kb
            Bangle.js2: Fix E.showMenu title changing color after scroll down+up *if* a non-standard theme was used
            Bangle.js2: Fix wear detection on latest Bangle.js 2 (VC31B variant) (fix #2141)
            Bangle.js2: Allow variable HRM poll rates on Bangle.js 2 VC31B variant
            Bangle.js2: VC31 HRM variant now polls at 25hz (not 50)
            Bangle.js1: E.showMenu now displays boolean values with no `format` as a checkbox
            Bangle.js1: E.showMenu now displays a submenu for multiple choice menu items (#2184)
            Bangle.js: built-in locale now doesn't depend on argument being an instance of Date (#2187)
            Bangle.js: Add ".noList" property to prevent E.showScroller inside E.showMenu            
            Bangle.js2: Add "Back"-Button on submenus inside E_showMenu 
            Graphics: g.setClipRect now uses rotated coordinates
            Graphics: g.draw/fillCircle now works with rotated coordinates
            Bangle.js2: Touch/drag coordinates now obey g.setRotation
            Graphics: Fix drawString with combination of g.setClipRect and g.setRotation
            nRF5x: Allow 'high speed' watches via 'hispeed' argument to setWatch. Higher power consumption but detects fast (<25us) pulses.
            Bangle.js2: E.showMenu now returns 'scroller', `format` is called with a second argument, font in popup is scaled to fit (fix #2190)
            Fix recent class method regression (24247e4ec9) (fix #2197)
            Bangle.js2: 6x15 font tweaks for better ISO8859-1 support
            Bangle.js: Add clock property to "custom" mode in setUI
            Allow method declarations in objects - ES6 'Enhanced Object Literals' (#2202 / #1302)
            Added Object.values/Object.entries (#1302)
            Added block scoping for let and const (#971)
            Honour non-writable const vars (fix #971)
            Remove Line Numbers from 'save on flash' builds
            Added Object shorthand, eg. x={a}
            Added numeric separator support eg. 12_34
            Add Nullish coalescing operator
            Enable releases and cutting edge builds for Puck.js minimal releases (with 98kB of free Storage)
            nRF5x: Fix memory leak (of address) when using NRF.setScan/requestDevice/findDevice (regression in 2v13)
            Fix issue with const in a module when called from a scope with const already in (fix #2215, fix #2207)
            Add `seaLevelPressure` to Bangle.setOptions (fix #2213)
            Bangle.js: speed up HRM average adjustment (specifically when sample rate is 25Hz, eg. for Bangle.js 2)
            Bangle.js: Change default distance units to m,km (from m,miles) (fix #2209, fix #2210)
            Bangle.js: Rename default locale to 'system' (from 'en_GB')
            Ctrl-C will now *not* break out of short-running intervals/watches, only long-running ones
            Bangle.js: Allow E.showMenu to be given an array and title option (fix #2175)
            nRF5x: We now clear the console's input line when connecting or disconnecting Bluetooth (fix #2219)
            Graphics: Add g.blendColor to expose the ability to figure out what color is between two others (fix #2150)
            Fix stack overflow if deallocating a massive linked list (fix #2136)
            String substr/substring/slice now work on native/flash strings by changing pointers rather than doing an actual copy (fix #2066)
            Fix over-iteration if breaking out of the very first iteration of FOR loop (fix #2012)
            JSON.stringify(pin) now returns valid JSON (Pin name as a string). E.toJS still leaves it as an ID (fix #271)
            Bangle.js2: Fix exception when using 'back' and physical button with Bangle.setUI
     2v13 : Memory usage improvement: Function scopes no longer stored as an array if they only contain one scope
            Memory usage improvement: The root scope is never stored in the scope list (it's searched by default)
            E.dumpVariables now dumps variable flags
            Tidying up Native Function handling (now JSV_NATIVE_FUNCTION not JSV_NATIVE|JSV_FUNCTION)
            NRF.getSecurityStatus now returns 'connected_addr' for the address of the currently-connected device
            NRF.setAdvertising converts arrays of arrays to arrays of ArrayBuffers. Also don't update advertising when connected.
            Memory usage improvement: Arrow functions only store value of 'this' if 'this' is used by code inside them (fix #2139)
            Add String.prototype.concat (fix #2140)
            Much-improved whitespace lexing code using single jumptable - 3% speed increase
            Allow `process.memory(false)` to get memory info but skip GC
            Graphics: fix height calculation bug in fillRect/clearRect when given an object with w/h as an argument
            Fix potential corruption issue caused by `delete [].__proto__` (fix #2142)
            Bangle.setUI is now minified, also calls Bangle.uiRemove if it was set (to clean up custom UI additions)
            E.showScroller tweaks to allow redraw requests, get/set initial scroll amount, negative scroll (for titles)
            NRF.setScanResponse now works on SDK15
            Fix g.wrapString if string ends with a bitmap
            g.wrapString now splits long words if they are too long for a line
            Add Storage.getStats to get more fine-grained info about Storage
            Add Bangle.midnight event that can be used for housekeeping tasks
            Graphics: You can now do `g.fillRect({x,y,x2,y2,r})` for rounded rectangles
            Bangle.js2: include new touchscreen E.showMenu system
            String.toUpperCase() and .toLowerCase() now work for accented ISO8859-1 characters (fix #1866)
            Report errors created during execution of `E.on('kill',...)`
            Bangle.js: ANCS/AMS now advertises 16 bit time service (doesn't crop the name, and good enough for iOS pairing)
            Number.toFixed(...) now doesn't exponentiate when the number is very small (fix #2157)
            Add E.showMenu({"":{back:function}, ...}) for easy specification of 'back' menu item
            Bangle.js2: Add 'back' option to E.showScroller and Bangle.setUI 
            Bangle.js2: Ensure that if Bangle.getPressure errors, the next call doesn't say 'Conversion in progress'
            Bangle.js2: Update E.showPrompt with a bigger touchable area around buttons
            Bangle.js2: 'touch' event coordinates are now clipped to screen coordinates (drag stay unclipped to allow touchscreen use for scrolling)
            Bangle.js1: Fix regression that caused setLCDMode not to work in 2v12 (fix #2155)
            Bangle.js1: Improved 'E.showScroller' menus
            Bangle.js1: Add 'back' option to E.showScroller and Bangle.setUI 
            Bangle.js1: setUI button handlers now work on falling edge
            Bangle.js: Add setUI custom 'swipe' handler
            Util Timer now runs independently of system time. More accurate on nRF52 (fix #2125)
            Bangle.js2: Battery discharge curve is now scaled better, and setting.json:batFullVoltage can be used to account for differences in sense voltage between devices
            Bangle.js2: Ensure NRF.setTxPower works for all connections and advertising
            If a process.on("uncaughtException" handler creates an exception, make sure we report it as Uncaught
            Bangle.js: If home button held and JS is still executing, force a break (like Ctrl-C)
            Graphics: Fix text bounding box calculation when just the top line of a character would be visible
            Bangle.js2: setUI now doesn't forward touch events if tapping over the back button
            Bangle.js2: New E.showMenu now allows menu items of type 'string' - fixes 'Passkey' settings menu
            Bangle.js2: Add visual feedback when showPrompt button is pressed
            Storage: Fix erase-after-compact bug if Storage completely full (fix #2174)
            Fix out of bounds jsvGetAddressOf in jsvNewFlatStringOfLength (wasn't a cause of instability)
            Storage: Now put all .js files into internal storage (if 2 storage areas). Fix corruption issue when reading using file with explicit drive letter 
            Bangle.js: default 'locale' now supports second 'dp' argument for decimal places in distance/speed/temp
            Graphics: Restrict setClipRect coordinates (Except on ST7789_8BIT (Bangle.js 1) where we need it for notifications. This stops potential out of bounds writes is setClipRect is wrong.
            Fix issues accessing object/array fields when the field itself has a null character in it (fix #2176)
            nRF5x: Fix merging of packers for `NRF.findDevice` - previously name fields in subsequent packets may have been left as 'undefined'
            nRF5x: NRF.findDevice now aggregates multiple packets even if only one packet matches the filter (fix #2178)
            nRF5x: Allow NRF.setAdvertising to set advertised service UUIDs (vs service data) easily with `NRF.setAdvertising({'180D':undefined})`
            Ensure JSON.stringify([undefined])=="[null]" as per the spec
            Bangle.js2: Unistroke recognition accuracy improvements

     2v12 : nRF52840: Flow control XOFF is now sent at only 3/8th full - delays in BLE mean we can sometimes fill our 1k input buffer otherwise
            __FILE__ is now set correctly for apps (fixes 2v11 regression)
            Bangle.js: Ensure Bangle.getHealthStatus("day") resets at midnight (fix
            Bangle.js: Attempt to fix that occasionally doesn't stop
            Bangle.js2: Lower bootloader LCD SPI bitrate (was out of spec, not all LCDs worked with it)
            Bangle.js: Attempt to fix occasional issue where vibration gets stuck on (fix
            Bangle.js: Ensure Bangle.setLCDPower only fires lcdPower event if state has changed (fix
            Bangle.js2: Holding BTN at boot skips bootloader storage check, bootloader now times out if too many files
            Bangle.js: Move position of filesystem checks to before first code is run
            Storage.write is now explicit about not allowing zero length files, also creates exception if it fails because it can't get a data pointer
            Bangle.js2: Only handle UBX protocol from GPS on Bangle.js 1 as it interferes with CASIC on Bangle.js 2 (fix #2124)
            Bangle.js: GPS-raw no longer sets the FIFO_FULL message if data is lost - just passes a bool as the second argument
            Fix for buffer overflow + segv found via fuzzing (#2121, #2122)
            new Date(str) no longer interprets ISO 8601 UTC timestamps as local time (fix #2116)
            Graphics: Fix clipRect checks for >1x bitmap fonts
            Allow __proto__ to be set to a function as well as object
            Bangle.js: Support for v2.1 barometer hardware (SPL06 vs BMP280)
            Bangle.js: Increase step counting noise threshold 14->17 to work around pedometer fake steps (
            Bangle.js: Support for v2.1 HRM hardware (VC31 vs VC31B)
            Bangle.js: Better HRM detection (higher res filtering, better peak detection, lower median filter size, better confidence)
            Fix E.decodeUTF8 when decoding UTF8 codes that contain all decimal digits
            Fix for potential buffer overrun if JSON.stringify used with strangely crafted whitespace arg (fix #2114)
            Add `NRF.setSecurity({encryptUart:true})` to force encrypted comms on BLE UART
            Bangle.js2: Increase wait after power-on for BMP280 to fix getPressure on some devices (fix #2120)
            Storage: Fix compaction error if a page starts with 0xff and the first write fits within that (fix #2009)
            Add NRF.startBonding to force bonding on peripheral connection
            nRF5x: Disable name change over BLE via 0x2A00
            Bangle.js1/2 : Fix inconsitent scroll indicator in menus (fix #2104)
            Bangle.js2: E.showScroller to respect widgets on bottom row (using appRect)
            Bangle.js: Step counter - Remove hard-coded gravity value and subtract DC offset with a filter
            Ensure jsfIsStorageValid kicks watchdog so we can't get stuck in a reboot loop if all of Storage is empty
            Bangle.js: Add 'graphicsInternal' to make Graphics independent of JS vars. Terminal is now useful earlier, and can display softdevice errors
            Bangle.js2: If errors do happen during Bangle.getPressure, reject the promise (fix #2137)

     2v11 : Bangle.js: Enable the Bangle.on('tap') event from the accelerometer by default
            Bangle.js: revert to (better) Kionix default thresholds for tap detect
            Bangle.js2: When wake on touch is enabled, use a single tap on the front of the device for wakeup
            Bangle.js: Display 'checking storage' message on first boot to alert users to slight delay
            Bangle.js: Tweaked step count algorithm (low pass filter, 4 steps in 90s)
            Graphics: asBMP/asURL/dump now support more bit depths
            Graphics: Allow .setFont/.getFont to use font size in a colon after the font name
            Graphics: .getFonts now lists 'setFont' functions however they were added (to `g`, built in, or to the prototype)
            Graphics: When rendering fonts with a solid background, ensure the gap between is filled too
            Flat Strings are now always aligned on a 4 byte boundary (fix #2040)
            Graphics: add setTheme on supported devices
            RAK5010: switch to 1.8v internal voltage (was 3.3v) to make GSM comms reliable, upgrade BG96 module
            RAK5010: Compile in TLS/HTTPS support
            Bangle.js: Fix issue where if non-fullscreen notification was visible and Bangle.js reset, screen was off-center
            Fix for issue with pretokenised code not creating correct text string for reserved words, eg {undefined:1}
            Bangle.js: Turn vibrate off every time a new app loads
            Fix issue where ({a:0}).a in the console would create a ReferenceError (works in code)
            Graphics: Allow setFont("FontName:1x2") for scaling in 2 directions (fix #2044)
            Graphics: Fix .asBMP for 4 bit images
            Graphics: switch RGB order for palette in asBMP for 4/8 bit images
            Bangle.js2: Idle power consumption down from 1.3mA to 0.9mA (pullups on HRM disabled when off)
            Bangle.js2: Increase reported bit depth from 3->16 and perform bayer dithering when rendering
              Makes icons/old apps way more usable (plus provides an easy way to get >3bpp)
            Bangle.js: Fix color palette when rendering 3bpp -> 16bpp
            nRF52840: Fix 900uA UART power draw when shut down
            nRF52: Send XON/XOFF when buffer is less full - reduce likelihood of FIFO_FULL with big MTUs
            Bangle.js: Fix powerSave regression (should default to 'on', but didn't since 2v10)
            Storage test on boot only tests storage fully if the first record is empty
            Graphics: drawString now accepts images in-line (fix #2063)
            Graphics: added stringMetrics to get height as well as width
            Graphics: drawString now correctly middle-aligns multi-line strings
            Graphics: add imageMetrics to allow image width/height to be read
            Graphics: drawImage(...,{frame:x}) can be used to draw animations
            Graphics: fix rotated/scaled rendering of 3 bit bitmaps (fix #2049)
            Bangle.js: fix Bangle.getLogo memory leak
            Bangle.js2: Graphics.getBPP now returns 3
            Bangle.js: attempt to unlock SPI flash multiple times (some devices don't unlock on the first attempt)
            Bangle.js: Fix Bangle.tap event regression (now works again)
            Graphics: add wrapString to wrap messages to the correct length
            Bangle.js: update showMessage and showPrompt with correct wrapping
            Bangle.js2: Add Bangle.compassRd, fix setCompassPower
            Bangle.js: Add Bangle.on('health',..) event and Bangle.getHealthStatus
            Graphics: drawImage now honours arraybuffer offsets
            Graphics: drawImage now supports up to 4bpp palettes rendered direct from flash
            Bangle.js2: Larger font for E.showMenu
            Graphics: drawString(..., true) for vector fonts now clears the background
            nRF52: swap getSerial bytes around so device ID string matches nrfjprog
            Bangle.js2: bootloader can now flash firmware from a file in Storage
            Bangle.js2: Add second Storage area in internal flash for fast access, memory-mapped files
            Fix unhandled reject of a previously resolved promise (fix #1433)
            Bangle.js: E.showMessage/showPrompt can now display images via optional img argument
                       E.showMessage/showPrompt handle padding correctly if no widgets are displayed
            Bangle.js2: Fix setUI clockupdown handling of 'up' 
            Bangle.js: Ensure builtin* (and fake LEDs) wake the LCD up
            Storage check now *only* happens on first boot
            Ensure __FILE__ is set by the time bootcode runs
            If executing from storage, work out line numbers and print filename for Errors
            Bangle.js: Don't store line numbers in functions - no need when execing from flash
            Bangle.js: Add E.showScroller for scrollable lists
            Fix issue where invalid JSON stopped execution after Storage.readJSON
            Bangle.js: Add Storage.hash for boot0 cache change checking
            Bangle.js: A single widget load failure will now not remove all widgets
            Bangle.js: widgets are now sorted by .sortorder
            While and for loop conditions now use Expression, not AssignmentExpression (eg. while(0,0) is fine) (fix #2068)
            Bangle.js2: Fix 'stuck' bottom row of pixels if scrolling downwards with g.scroll(0,1)
            Bangle.js: Fix issue where minified E.showMenu was creating a global var called 'c'
            Fix string formatting for "Field or method X does not already exist" error
            Graphics: drawRect,fillRect,clearRect are now able to take an object as the first argument
            Bangle.js: Add Bangle.appRect to allow apps to see how much space is available for them
            Bangle.js: Add `Bangle.setOptions({hrmPollInterval:...});`
            Bangle.js2: Bangle.dragHandler is now cleared by setUI (fix #2078)
            Bangle.js2: Adjust full battery voltage
            Avoid Watchdog reboot during compact if compacting a lot of data (fix #2075)
            Storage: Fix issue where compacting empty storage could cause out of bounds erase (fix #2081)
            Fix issue where pretokenised '1 - - 1' would turn to '1--1' (fix #2086)
            Fix break scoping error in nested for loops (fix #2084)
            Fix memory leak when rejecting pre-resolved promise (test_promise11.js)
            Fix parser errors in arrow functions (fix #2067)
            Bangle.js2: Add Unistroke object, and 'Bangle.stroke' event
            Fix pretokenised '1 / /.../' and ensure jslSeek resets the previous token (ref #2086)
            nRF52: Move neopixel LRCK pin which can't be disabled due to hardware errata, and restore state after (fix #2071)
            Bangle.js2: Disable unboard flash bank for now (issues with erase on reboot)
            Bangle.js1: Fix E.showScroller implementation
            Bangle.js2: Ensure tap and twist turn LCD backlight on as well as unlocking
            Bangle.js1: Bangle.setUI now deletes touchHandler (fix #2095)
            Bangle.js2: Tweak battery high mark again
            Bangle.js2: Fix E.showScroller when there are less than 3 menu items
            Bangle.js2: and .softOff now turn off touchscreen if it was on 
            Bangle.js2: Ensure antialiased line routines are built in
            Bangle.js2: Add HRM wear detection (LED no longer turns on if HRM not on skin)
            Bangle.js2: Add a 32 entry cache to speed up finding common files - improves app load times
            Bangle.js: Ensure locale honours 12 hour setting (
            Bangle.js2: Ensure EXTCOMIN time for LCD is nearer 2us (from datasheet) (ref #2097)
            Bangle.js2: New default JS firmware
            Bangle.js2: Minify Bangle.drawWidgets
            Bangle.js: Bangle.appRect now copes with widgets at the bottom
            Bangle.js2: Fix >128 ASCII codes for 12x20 font (fix #2105)
            Bangle.js: Add SPI flash read-after-write to verify write succeeded (fix #2109)
            Bangle.js: Fix E.showMenu clear if background color is set (
            Bangle.js: Re-add E.showMenu predraw callback (fix #2108)
            Bangle.js2: Add hrmRd/hrmWr that allow you to poke the HRM directly
            Bangle.js: Fix for previous SPI flash write verify when <4 bytes written
            Bangle.js2: Add write protection for bootloader and softdevice to avoid accidental bricking
            Bangle.js2: Bootloader now attempts multiple times to initialise ext flash, and waits longer (fix fw update app issues)
            Bangle.js: Add Bangle.getHealthStatus("day") to allow automatic step counts for the current day
            Remove for(of/in) for extremely constrained devices (Micro:bit 1 only)
            Bangle.js: bootloader now doesn't start immediately after power off (can help with 100% flat battery)
     2v10 : Bangle.js: Improved HRM calculations - swapped autocorrelation for bandpass filter
            Bangle.js: Significantly improved step counting algorithm using bandpass filter (fix #1846)
            Bangle.js: Ignore touch and swipe events when the LCD is off
            Graphics: Fix 1bpp custom fonts on 2/4/8 bpp graphics Canvas not being the right colour
            Bangle.js: Don't reset all peripherals when loading a new app, and only
              turn peripherals off if unused 500ms after starting new app
            Increase max arguments for Function.apply from 64 to 256
            NRF52840: Create new NRF_GPIO_PIN_X_FAST as Nordic's gpio functions will no longer inline!
            Graphics: Add .blit() to allow fast blits within a single Graphics instance
            nRF52840: workaround for SDK15 bug that stops softdevice restart when WDT enabled
            Disallow template strings in object decls like {`hello`:1} (fix #2006)
            Bangle.js: Add support for global colour themes which affect g.clear/g.reset (fix #499)
            Bangle.js: Switch beep/buzz to IRQs (keeps time correct even when JS is busy)
            Add E.decodeUTF8 to allow UTF8 to be decoded into standard 8 bit characters
            Util timer: account for 'drift' in timer when adding new tasks if running it continuously
            Graphics: Allow 'scroll' method to only scroll inside clipRect
            Bangle.js: if we restart with home button held down, ignore the 'button up' event
            Remove Graphics.drawImages from non-Bangle.js builds to free up space
            Pico: Remove SHA512 from build to free up space
            Storage: fix issue where functions referencing flash weren't correctly relocated during compact (#2009)
            Add support for rendering 3 bit images to 12/16 bit destinations
            Ensure Serial1.unsetup can be called even if it doesn't appear to have been enabled
            Puck.js: ensure self test only happens after hardware reset (fix #2001)
            Bangle.js: Fix issue where long-press BTN3 while holding BTN1 would reload the app but wouldn't load configuration (eg not setting timezone)
            Graphics: add .getBPP, and allow color blending (rather than copy) when drawing 2 bit images on any BPP Graphics instance
            nRF52: If getPrimaryServices fails with NRF_BUSY, keep retrying after a delay (fix #2008)
            Bangle.js 2: Fix getPressure memory leak
            Graphics: Theme now only applies for LCD, not for JS/ArrayBuffer graphics
            Graphics: Add dark boolean to themes to allow apps to update depending on bg color
            Bangle.js: setUI now has 'clock' modes
            Rename SMAQ3 board to BANGLEJS2
            nRF52840: Remove ifdef around PHY_UPDATE_REQUEST - fixes BLE5 connections
            Graphics: Allow g.drawImage to use ArrayBuffer Graphics as an argument 
            Bangle.js: Display small 'Loading...' screen to show something is happening when loading apps
            Promise: Fix issue with .then().then(...) on an already-resolved promise (fix #2019)
            Bangle.js: g.flip no longer keeps the screen awake, flipTimer renamed to inactivityTimer
            Bangle.js 2: 'factory default' set of JS now included inside firmware
            Bangle.js: Build in ANCS support (disabled by default)
            Bangle.js 2: Working VC31 heart rate monitoring
            Bangle.js: Push GPS events immediately after GPGSV (more portable/resilient to config changes)
            At first boot, fully check Storage for validity (if not full, ensure remaining pages are 0xFF)
            Storage: Ensure jsfIsStorageValid returns true when storage is valid, but full
            Bangle.js: Add Bangle.getGPSFix to get last GPS fix without waiting for a listener
            Merge experimental_compact_vars branch to reduce var sixe from 16 to 13 bytes in most cases.
            Add JSVAR_FORCE_16_BYTE to allow experimental_compact_vars changes to be removed
            Add JSVAR_FORCE_INLINE, and don't force lock/unlock/getters to be inlined.
              Compiler has improved enough we save 10% code space and get marginally faster
            Add ArrayBufferView.subarray for easily making subarrays (eg a.set(a.subarray(-1)))
            Solve case where an ArrayBuffer set using the same array could duplicate entries (`a.set(a.subarray(),1)`)
            nRF52: Fix 2v09 regression where clearWatch reset pin state, removing pullups
            nRF52: BLE stack errors now reports a line number
            nRF52: 'BLE task in progress' messages now give a readable name, not task number
            MICROBIT1: Remove hardware SPI to save space. Software SPI still works

     2v09 : Bangle.js: increase default advertising interval from 375 to 200ms to ease connections
            Fix Math.acos for negative values (fix #1950)
            nRF5x: Add callback param to 'NRF.restart', allowing code to be called with softdevice disabled
            Bangle.js: fix require("locale").time(new Date()) for default locale
            Now use exponents when printing doubles >= 1E21 or < 1E-6 (fix #1489)
            Fix Regexp handling of unescaped '.' in character group: /[.]/ (fix #1948)
            Now error if using (unsupported) RegExp backreferences
            nRF52: Ensure SPI 1 byte DMA errata workaround isn't applied to non-52832 parts
            nRF52: When outputting assertions, if we have an terminal device (eg LCD) use that
            When load(filename) is used, set global variable __FILE__ to the filename
            Util Timer no longer uses RTC - works based on estimated time from the hardware timer itself (fix #1749, ref #1444)
            Pull in fixed SHT3C.min.js for RAK5010
            Add support for relaying full touchscreen events in devices that support it
            Fix flip-on-idle behaviour for non-Bangle.js smartwatch ports
            Add support for buttonless bootloader (first boot only, times out after 5 seconds)
            Fix emulator crash if Graphics.drawPoly used with odd number of points
            Graphics.fillPoly now errors if >64 points (prev was 63)
            Graphics: Support for palettes supplied in image strings
            nRF52840: Ensure internal voltage regulator is set to 3.3v (not 1.8v default) at boot
            Fix Array.forEach when deleting the item you're currently iterating over (fix #1962)
            Bangle.js: StorageFile now uses 10x bigger chunks which reduces stress on Storage.list()
            Storage.list now allows you to specifically request StorageFile, only ever reports first StorageFile chunk
            Graphics: Allow colors to be specified as '#rgb' strings
            Graphics: Antialiased lines now read the background color so overlap nicely
            Graphics: Add fillPolyAA and use antialiased vector fonts (on platforms where AA is enabled) 
            Puck.js: Fix regression where IR LED was left on after transmission (fix #1969)
            Graphics: Fix overdraw when drawing ellipses/circles
            NRF52840: Use SPI3 by default as it's more capable/faster than SPI0
            SMAQ3: Add support for unknown compass IC
            Bangle.js: Make the 'home' button more configurable in code
            Bangle.js: Add Bangle.softOff to allow the RTC to keep running
            nRF52: Allow devices to remember the time between reboots (even if RTC is reset)
            Microbit 2: Increase RAM from 64k to 128k
            Bangle.js: Don't enter accelerometer power save mode if compass/barometer is in use
            Watches: Allow streaming pressure data from Barometer
            Graphics: Add antialias/colour blending for 24 bit buffers
            NRF52840: Create new NRF_GPIO_PIN_X_FAST as Nordic's gpio functions will no longer inline!
            nRF5x: reset BLE advertising after `load()/reset()` (fix #1975)
            Bangle.js: Add accelerometer recovery for rare cases when accelerometer boots with corrupted address (fix #1972)
            Bangle.js: Add app ID option to setXYZPower to allow apps to share devices (power is on as long as one app wants the device) (fix #1971)
            Bangle.js: Add isXYZOn() functions
            BLE: Allow 128-bit service data to be decoded (fix #1976)
            Graphics: Fix 8 bit ArrayBuffer scroll not working correctly in some directions
            Storage: Fix corruption issue with StorageFile write after a Storage compact (fix #1970)
            Fixed dimmable backlight on non-Bangle.js watches 
            SMAQ3: Touchscreen is now powered off with Bangle.setLCDPower(0), auto-powers off after 30s
            nRF52: Upon rebooting, reset time to 1970 if time looks corrupt
            nRF52840: Don't use SPI3 unless ESPR_USE_SPI3 is defined (errata 195 means it draws an extra 1mA unless disabled!)
            Bangle.js: apply g.drawImage fast path even if image goes to the edge of the screen
            Graphics: Improve fillPolyAA for horizontalish lines, remove antialiased vector fonts (as won't work well on platforms without readback)
            Fix invalid free caused by error inside a while loop condition (fix #1983)
            Fix SIGFPE if using modulo with -1 (fix #1983)
            Fix memory leak on Array.forEach/map/filter/etc caused by #1962 fix
            Fix Espruino not sleeping when very low on free memory (fix #1986)
            nRF52: Use 'low accuracy' GPIOTE for watches as we can shut down the high speed oscillator
            E.getSizeOf() and trace() now don't recurse into references back to the global scope (makes sizes and traces far more useful)
            nRF5x: Move from separate sdk_config.h to a single targets/nrf5x/app_config.h file
            Original board: Remove Graphics.*Ellipse and StorageFile when networking enabled to allow builds
            Update S132 Softdevice from 3.0.0 to 3.1.0 (fix #1999)
            nRF5x: Allow Espruino builds with a configurable MTU - move Espruino boards to 53 byte (from 23) (#1998)
            Fix issue parsing `r=>print((e=>{})(r))` (fix #1992)
            Add DHE RSA key exchange for TLS/HTTPS (fix #1994)
     2v08 : nRF52: Added option to build in I2C slave support
            Fix Tensorflow aiGesture regression from 2v07 (re-add opcodes) (fix #1936)
            Add support for > 1bpp custom bitmap fonts
            Bangle.js: add drawLineAA and drawPolyAA for antialiased lines
            Removed custom fonts for SAVE_ON_FLASH devices
            Fixed BBC micro:bit show() regression from 2v07
            Ensure Storage library is exposed on SAVE_ON_FLASH devices (fix micro:bit flash write)
            nRF52: Fix issue where analogRead would stop E.getBattery from working
            Fix setWatch debounce lastTime regression from 2v07 (fix #1902)
            nRF52: CPU now sleeps when while UART/BLE data is waiting to be sent (fix #1938)
            JSON.stringify now checks for potential stack overflow when stringifying (fix #1940)
            Check for Stack overflow when Garbage Collecting giant linked list (fix #1765)
            Added String.padStart/padEnd
            Fix issue where JSON.stringify({ something: bool }) would output 'something' as a bool too
            Bangle.js/Pixl.js: Ensure terminal is always the same color regardless of g.setColor()
            Original Espruino Board: remove E.FFT in network-enabled builds (freeing up flash memory)
            Storage compact now updates pointers stored in RAM so they still point to the correct address in Flash (fix #1881)
            Bangle.js: Add debounce to the button used to wake Bangle.js up from sleep
            Fix regex match with '-' that isn't a range: "1-2_A3".split(/[0-]/) (fix #1736)
            Crypto: modified mbedtls SHA1 to reduce size from 3.5k to under 1k
            Graphics: Fix for out of bounds ArrayBuffer scroll issue (fix #1946, #1947)

     2v07 : Graphics.asImage() now contains buffer when bpp != 8 (fix #1863)
            nRF52 SDK15: Fix NRF.setScan/findDevices/etc
            nRF52: reduce input buffer space taken by advertising packets
            Pretokenisation: reserved words can now be used as function names (fix #1868)
            jslGetNextToken now avoids iterator clone for each token (fix #1857)
            nRF52: fix instability when accessing ADC from IRQs and event loop at the same time (fix #1861)
            Fix 0.0==null comparison (fix #1865)
            WIZNet: add setHostname(), geHostname(), getStatus()
            Fix XON not sent after reset() (fix #1872)
            Remove USBSERIAL enum for non-USB devices
            Shrink new vector font sizes to allow multi-line use (fix #1873)
            Stop Object.setPrototypeOf overwriting Object.prototype sometimes (fix #1875)
            Arrow functions now always overwrite `this` (fix #1878)
            Implement Streaming Storage compaction to allow compact with less RAM (fix #1598,#1707,#1828)
            jslTokenAsString now works for 'of'
            Speed up Array.prototype.join (fix #1660)
            Allow 'in' to be used with typed arrays (fix #1534)
            Fix global regex issues when match may be 0 chars (fix #1888) (fix #1889)
            Improve String.replace performance using iterator rather than repeated copy
            Pixl.js: SDA/SCL constants should point to A4/A5, not D4/D5
            Fix Graphics.fill/drawCircle lock leak
            Fix issue when do..while loop condition has side effects
            Bangle.js: Ensure SPI flash CS is disabled when sleeping/off
            nRF5x: clear FPU interrupt before sleeping
            micro:bit: Add support for LSM303 accelerometer/magnetometer
            micro:bit: Add delays at first boot to wait for USB UART to init and connect vis USB
            micro:bit: Re-added tab complete (enough space now)
            micro:bit: Added a fake pin for LED/LED1 that uses the LED matrix
            nRF52: Allow a cccd_handle of 0 for startNotifications
            Bangle.js: Power down SPI flash when sleeping/off
            nRF52: Use the best available hardware timer for PWM taking frequency into account
            Fix delay in scheduling after initial setTimeout call (from 2v06 and later)
            Align Tensorflow arena to 16 bytes - new Tensorflow requires this (fix #1914)
            Fix ReferenceError when arguments[0] is used when an argument is undefined (fix #1691)
            JSON conversion for console now removes quotes on key lengths bigger than 15 (63)
            micro:bit: add Storage.write/etc even on space-constrained (SAVE_ON_FLASH) devices
            Remove flash compaction code on SAVE_ON_FLASH devices to save some space
            Fix occasional duplicate state changes when using setWatch with debounce (fix #1902)
            JSON.stringify now outputs 'null' for non-finite numbers as the spec requires (fix #1919)
            Update Tensorflow to latest version, fix return 0 issue on ARM release builds (fix #1918)
            Bangle.js: Accelerometer poll handler now uses RTC app_timer, not TIMER1. 1mA->0.5mA standby current (ref #1920)
            Bangle.js: SPI MISO is now input_pullup (shaves ~20uA)
            Espruino WiFi: Fix startAP function when open and no password supplied
            Bangle.js: Accelerometer now runs in low power mode (saving ~150uA)
            Bangle.js: Peripheral polling now only fully wakes Bangle when an event requires JS processing (ref #1921)
            Bangle.js: When not moved for 1 minute, slow down accelerometer poll interval from 80 to 800ms (fix #1921)
            Ensure software SPI/I2C/Serial don't leak a variable when initialised
            Fix delay in scheduling after initial setTimeout call (from 2v06 and later)
            Espruino WiFi: Fix StorageFile on Espruino WiFi (use max storagefile size of 4k)
            Espruino WiFi: Fix Storage compaction regression (introduced after 2v06 release)
            Bangle.js: Fix backlight flicker regression if at part brightness (fix #1925)
            Fix ArrayBuffer.sort with negative numbers (it's not just Array.sort!)
            nRF52: Use the best available hardware timer for PWM taking frequency into account
            Bangle.js: Report GPS HDOP (Horizontal Ditution of Precision => accuracy) values in 'GPS' event
            Pixl.js: Remove SHA256 from build to free up a little extra code space
            nRF52: Restarting softdevice no longer changes the system time by 5 mins sometimes (fix #1933)

     2v06 : Allow `"ram"` keyword at the top of a function to allow it to be pretokenised and loaded to RAM
            Don't store line numbers for pretokenised functions
            Fix 1-byte overflow when using UDP (#1799)
            Remove 1-byte padding in Graphics lib
            Bangle.js: Make SPI flash memory map address configurable, and check end bounds (#1807)
            Bangle.js: More SPI flash memory map address to 0x60000000 to avoid ARM/nRF52 registers
            nRF52: Fix issue with fast Notifications causing Notification data to be duplicated
            Bangle.js: allow custom splash screen with .splash file
            Pixl.js: Fix E.showMessage
            Puck.js v1: Fix regression that stopped Puck.IR(data) working - Puck.IR(data,D26,D25) required
            Puck.js v2: Ensure FET is used for IR output, fix selfTest errors for IR and Blue LED
            Bangle.js: Big speed improvements for 120x120 and 80x80 gfx modes
            Enable Graphics arraybuffer optimisations on all but low-end devices
            Add specific Graphics optimisations for 1 and 8 bit rendering
            Bangle.js: drawImage - add fast path for non-transparent 1 or 8bpp image blit (fix #1794)
            Graphics.drawImage docs improvements (fix #1812)
            Fix issue where it was possible to get an address of a non-memory-mapped FlashString
            Graphics.drawImage: Allow 8 bit palettes to be specified
            Bangle.js: Remove dumping of hardware state - saves some flash memory
            microbit: Remove dumping of hardware state - saves some flash memory
            Bangle.js: fix 'short' time for built-in locale
            Bangle.js: fix 'speed' units for built-in locale
            Graphics.createArrayBuffer now honors `msb:true` if `bpp>8`
            Graphics.asImage: handle >8bpp correctly (fix #1797)
            Graphics.asImage: Allow 'string' output type, reference Graphics buffer if possible
            STM32: Fix 2v05 regression in hardware SPI.write (RX timeout)
            Graphics: fix lock leak in g.reset()/g.clear(1)
            Graphics: added drawImages to allow layers of rotated/scaled images to be composited 
            Remove E.interpolate/2D (not used much, just using flash)
            Bangle.js: use double math FFT to save a few bytes of flash
            Storage.writeJSON (fix memory leak)
            dump() is now aware of pretokenised code (fix #1821)
            Merge jsvStringIteratorGetChar + jsvStringIteratorNext into jsvStringIteratorGetCharAndNext (fix #1816)
            Fix 2v05 regression that stopped process.uncaughtException from working (had been moved to E.uncaughtException)
            nRF52: If passkey or oob is set in setSecurity, ensure that the UART connection requires encryption (fix #1705)
            Now report [ERASED] rather than ?[255] if we hit char code 255 while evaluating
            Bangle.js: read `setting.json` at init and modify Bangle.beep/buzz behaviour accordingly
            Tensorflow: remove some as-yet unused operators to free space
            nRF52: Speed up bootloader, remove pauses on Pixl.js
            Pixl.js: fix self-test/terminal print - write to screen immediately after newline unless in IRQ
            Fix issue with iteration over arrays with negative entries (these should be converted to Strings)
            Linux: improve command-line, allow recursive test directory and more than one test (eg wildcard + shell expansion)
            Added new vector fonts supporting most of ISO8859-1
            Graphics.fillPoly now uses 4 bit fixed point internally
            nRF52: Fix 2v05 hardware SPI regression (chip errata when sending 1 byte)
            Graphics.fillPoly now uses a more normal fill algorithm that doesn't attempt to fill to the top right (fix #1796)
            Fix setTimeout/Interval accuracy when new timeouts scheduled within timeout (fix #1829)
            nRF52: Fix 'BLE task 2 is already in progress' if disconnect called during connection process
            Puck.js: Put accelerometer into lower power mode by default
            Puck.js: Switch to IRQs for magnetometer (lower power consumption)
            Improve Graphics.drawImage speed and simplify code by allowing fast path for non-rotated graphics
            Tensorflow: updated to v2.2, removed un-needed ops (reduces size by 24k)
            Puck.js: Fix Puck.magTemp();
            Puck.js v1: Fix magnetometer reading after puck.magOn (2v05 regression) - use old software I2C implementation
            I2C: Improve software I2C (now quickly forces I2C high before pullup, to help improve clock speed)
            Bangle.js: Fix GPS-raw events to provde also u-blox UBX Protocol messages (fix #1838)
            Bangle.js: Save RAM in GPS handling, allow arbitrary length data returned (fix #1843)
            Tensorflow updated to current 'master' version
            Bangle.js: Improve SPI flash speed by with specific function for reading and keeping CS asserted (fix #1849)
            Bangle.js: Ensure BTN3 exits debug mode (fix #1842)
            Bangle.js: Now warn if GPS data overflows (fix #1847)
            Fix double unlock in load(filename)
            Bangle.js: Fix occasional execution errors when executing from Flash (fix #1854)
            Add Graphics.transformVertices()
            Re-add Graphics.quadraticBezier for Bangle.js, move to integer math to halve fn size
            Emscripten: (fake) Flash memory support

     2v05 : Add Array.includes
            Fix (Number.toFixed) rounding, eg (1234.505).toFixed(2)
            nRF52: If a central is connected to Espruino but isn't reading from UART, don't block waiting to send data
            ESP8266: reverse fix #1679
            Added Graphics.getFont/setFont/getFonts
            Added Graphics.getFontHeight
            Added option to compile in 6x8 fixed-width fonts
            Fix issue where Util Timer timers could break after a call to setTime
            nRF52: Enable DMA for SPI send
            Added option to build in TensorFlow Lite for AI
            Documentation for modules now includes require('...') in the call type to be less confusing
            ESP8266: warning: Empty loadable segment detected (fix #1690) 
            nRF52: Add NRF.nfcPair(...) and OOB pairing to allow tap to pair over BLE
            nRF52: Add NRF.nfcAndroidApp(...) to launch an Android app on touch
            Pixl.js remove SHA512 to make room for new NFC functionality
            Graphics.setFont("4x6",2) will now double the size of a bitmap font
            Graphics.drawImage can now take a String of data for an image (eg. direct from Storage)
            nRF5x: Support connection to devices with RANDOM_PRIVATE_RESOLVABLE and RANDOM_PRIVATE_NON_RESOLVABLE addresses
            Pixl.js: Move SCK pin used during Neopixel writes to ensure it doesn't interfere with BTN3
            nRF52: Fix alignment issue with Nordic's SDK12 code that stopped passkey pairing from working sometimes
            Storage lib now doesn't bother reading to end of flash to ensure pages are clear
            Allow heatshrink compress/decompress to work even if flat buffers can't be allocated
            require("Flash").write operations no longer need to be aligned
            require("Storage").open added - for appendable files
            Pixl.js: Removed AES functionality - unfortunately we're running low on space for it
            Original Espruino Board: Removed Vector font and don't add rotated drawImage to save flash
            nRF5x: Add NRF.filterDevices to allow scanned devices to be easily filtered after scanning
            nRF52: Fix 'BLE task completed that wasn't scheduled' warning regression (peripheral disconnect)
            Can now get a data pointer even from a single JsVar string (it doesn't have to be flat)
            Add option to specify a palette when drawing images with drawImage
            Add XON/XOFF flow control to Bluetooth LE UART (on by default)
            Lower thresholds for XON/XOFF to give more headroom with devices that are slow to respond
            Add a fast path for non-rotated non-scaled Graphics.drawImage
            Add argument check for heatshrink compress/decompress
            nRF5x: Ensure gatt.connect silently succeeds if we're already connected to the device
            Add E.showMenu, deprecate - use a common function to ease porting between devices
            Added E.showPrompt, E.showAlert for Bangle.js
            Pixl.js - check '.splash' file at startup and use it for splash screen if it's there
            Improve free list ordering when Flat Strings are freed
            Added E.defrag to perform defragmentation - still beta!
            nRF52: fix issue where restarting the softdevice would reset the RTC
              - fixes Bangle.js watchdog reset
            nRF52: fix issue where advertising flags could get out of sync after SD restart
            Bangle.js: fix units for GPS speed (was knots, now km/h)
            Bangle.js: Add Bangle.setLCDBrightness
            nRF52: Fix passkey pairing if setSecurity is after setServices
            Bangle.js: EVents for 'swipe' and 'touch' on the touchscreen
            Added ability to compile Espruino to JavaScript with Emscripten
            Allow g.setColor/setBgColor to take hex Strings of the form `'#00ff00'`
            Bangle.js: Added heart rate autocorrelation, setHRMPower and 'HRM' event
            Bangle.js: New 120x120 and 80x80 high speed buffered modes
            Fixed REPL to allow chars with char code >=128
            Fixed lex tokenToString for 'break'
            Bangle.js: add fake LED/LED1/LED2 as @allObjects suggested
            Add Graphics.toColor, and allow 4 bit Mac palette to be mapped to 8 bit web palette
            Add Graphics.setClipRect to allow draw ops to be restricted to a certain area
            Bangle.js: add 'null' LCD mode to stop apps from drawing
            Bangle.js: add Bangle.getLCDMode
            Bangle.js: skip firmware version checks to save some bytes in bootloader
            Graphics: new g.fillPoly to handle irregular polygons
            Bangle.js: Bangle.setLCDMode now errors if it can't allocate a flat string (also garbage collects and defrags to try and ensure it can)
            Graphics: drawEllipse/fillEllipse now work correctly for very small ellipses
            Fix type compare of string and flatstring
            Allow to make partial file reads (fix #1744)
            Fix SyntaxError when using pretokenise + getters (fix #1745)
            Add Graphics.reset, and ensure it (and g.clear(1)) unreference custom fonts
            Iterator cloners now take a reference to the iterator rather than returning it
            Flash Strings: On Bangle.js allow JS code (and other Strings) to be accessed without loading them completely from Flash
            Added E.CRC32 for easy testing of data validity
            Add `E.on('kill'` event for executing code before load/reset/save/etc
            JSON.stringify now escapes using the less efficient JSON subset of escape characters (fix #1737)
            Allow optional `load("filename")` to load a JS file from Storage (was just `load()`)
            Bangle.js: add Bangle.loadWidgets/drawWidgets
            Bangle.js: Remove deprecated
            Ensure it's possible to get a solid background when using 4x6 font
            Bangle.js: Add Bangle.showLauncher
            Add append optimisation for string '+', and don't append to flat/native/etc strings (fix #1746)
            ESP8266_4MB: add optional build flag FLASH_1MB for ESP8255  & ESP01s with 1MB flash
            ESP8266: add optional build flag NO_FOTA to remove flash over the air functionality
            Add Bangle.getCompass and Bangle.getAccel to get the latest compass/accelerometer readings without a callback
            Fix `parseInt("0b",16)` as well as some other non-compliant behaviour (fix #1722)
            Bangle.js: Disable touch buttons if screen off
            Bangle.js: Don't send 'up' event for a button that was used to wake the screen
            Bangle.js: GPS event.time set to undefined if GPS time is not initialised
            Fix regression that removed exception reporting in console
            Bangle.js: speed up bootloader progress bar
            Bangle.js: fix problems turning off via bootloader sometimes
            Bangle.js: improve power consumption when off, now ~0.08mA (fix #1727)
            Bangle.js: add Bangle.setOptions({wakeOn*}) for when LCD should light
            Bangle.js: Add 'twist' event and 'wakeOnTwist' (wakeOnTwist now default true, waveOnFaceUp default false)
            Bangle.js/Pixl.js: Updated E.showMenu
            Bangle.js: E.showMenu now has some colour, bigger, with next/prev indicators, and works with widgets 
            Pixl.js: Add E.showPrompt/Alert/Message (fix #1747)
            Add .toJSON handling for JSON.stringify, and add Date.toJSON (fix #1754)
            Remove broken Graphics.drawImage centerx/y (fix #1742)
            Add Storage.writeJSON to avoid any confusion of writing arrays/numbers/etc
            Bangle.js: Keep widget area free when using showPrompt/Alert/etc (fix #1756)
            Add more info about flash memory to process.env/process.memory
            Add Graphics.quadraticBezier() 
            Allow Graphics.setFont to be used with custom fonts (fix #1762)
            Espruino WiFi: WiFi module now makes BOOT pin open circuit when sleeping - saves ~2mA
            Add E.setConsole/getConsole to allow console to be moved (including to 'null')
            Bangle.js: Ensure HRM is turned off in (fix #1759)
            Increase 'Storage' library's max filename size to 24 bytes (from 8)
            Remove header.replacement in 'Storage' lib and just zero
              - increase filename to 28 bytes, but file search now more efficient
            Bangle.js: Increase Storage area to full 4MB of flash
            Bangle.js: NEEDS NEW APPS - Move away from using first char as file descriptor and use file extensions instead
            Add StorageFile.getLength() to get the current length of a StorageFile
            StorageFile also writes files with a 'JSFF_STORAGEFILE' flag (not currently used)
            Storage.list() can now take a RegEx/string to filter returned results 
            MDBT42Q: Remove AES encryption libs by default to free up more flash memory
            Microbit: Add SAVE_ON_FLASH_EXTREME flag to ensure builds keep working
            Bangle.js: Added built-in 'locale' module to handle common conversions - this can be overwritten by a Storage File to change language
            Storage.readJSON now has optional 2nd arg that stops it from creating exceptions on bad JSON
            Bangle.js: Tweak LCD gamma curves to provide better gradients on new watches (fix #1758)
            Bangle.js: fix BLE UART transmit bug when compiling for SDK14 (thanks @fanoush!)
            Add euro symbol to 6x8 and 4x6 fonts as char code 128 (ISO10646-1)
            Bangle.js: Use 'locale' library to translate E.showMenu/Prompt/Alert/etc
            Bangle.js: remove graphical_menu lib and inline specialised version into E.showMenu
            Bangle.js: Modify handling of widgets to allow variable width widgets (requires new widget JS)
            Changed 6x8 builtin font to a modified Dina_r400-6 supporting non-ASCII characters
            Bangle.js: Modify E.showMessage/Prompt/Alert to clear the entire screen and redraw widgets (fix #1771)
            Bangle.js: Modify Bangle.drawWidgets to only clear the areas where widgets actually are, not the whole top&bottom bar
            Kick Watchdog when erasing flash (it can take so long on 4MB external flash that it reboots)
            Bangle.js: Add 'meridian' to locale library
            ESP32: add environment variable COMPORT to be used with make flash 
            Puck.js: v2 Support: Accelerometer/Gyro/temp
            Puck.js: Self test now sets Puck.js BLE name if there's an error
            Fix bitwise rshift by 0 to be unsigned (fix #1784)
            Bangle.js: Don't load .boot0/1/2/3 if BTN1 is pressed
            Puck.js: Allow D21(RST) to be used as normal IO pin
            Fix recent E.getTemperature regression (fix #1788)
            Fix pretokenise of RegExp literals (fix #1786)
            Add ability to turn off software I2C clock stretching (not accessible from JS)
            Puck.js: disable clock stretching for built-in sensors
            Bangle.js: Now clear entire top/bottom row if there are widgets in it (fix #1790)
            Add Storage check at startup and erase everything if storage looks corrupt (fix #1766)
            Fix restriction on StorageFile filename length (8 to 28)
            Fix array sort when compare fn returns floats <1 (fix #1798)
            Fix Storage.write duplicate file issue in some rare cases (fix #1801)
            Bangle.js: fix post-kickstarter issue adding widgets in bottom of screen (#1790)
            Bangle.js: fix magnetometer self-calibration
            Espruino Original: Removed Debugger, Tab complete, AT command networking from WIZnet networking build to free enough Flash
            Espruino Pico: Added a normal build that doesn't contain CC3000 or WIZnet support
            Espruino Pico: Removed Debugger and Vector font from WIZnet/CC3000 networking versions to free enough Flash
            HYSTM32_28: Removed from build due to lack of interest and difficulty with increased firmware size

     2v04 : Allow \1..\9 escape codes in RegExp
            ESP8266: reading storage is not working for boot from user2 (fix #1507)
            Fix Array.fill crash if used to fill up all available memory (fix #1668)
            Fix NRF.requestDevice regression (clearInterval error) (fix #1669)
            Smartibot devices now advertise on BLE as 'Smartibot abcd'
            nRF5x: Leave digital input disconnected for analog read (saves power)
            nRF5x: Return 'analog' as pin mode for any pin where input is disconnected
            If watchdog is on and automatic, ensure that `reset()` keeps the automatic kicking going
            Ensure that a console stays locked even after 
            Ensure interpreter flags (eg echo) are cleared after a `reset()`
            nRF5x: When watchdog is on and automatic, automatically wake up often enough to service it
            Fix Graphics.setFontBitmap on builds with no vector font (fix #1671)
            Graphics.asBMP now takes account of bitmap rotation (fix #1672)
            Raspberry pi pin numbering the same if using wiringPi or filesystem GPIO (fix #1673)
            nRF52: Peer manager init errors from Nordic libs now not fatal 
            SDK15: Writing to flash now works
            nRF52840: USB Serial works even for big sends, and device swaps to USB automatically
            nRF52840: Allow Serial2 to be used
            ESP8266: optimize rename-section for ESP8266_4MB board, freeHeap +2064 byte (fix #1679)
            Fix corruption if Function.replaceWith called manually on something not a function (fix #1684)
            Fix bug where '.clone' on a native function didn't copy arguments (fix #1685)
            nRF52840: Fix input/pullup/pulldown pin modes on IO bank 2
            Added `E.memoryMap` to allow on-chip registers to be mapped direct to variables (fix #1500)

     2v03 : nRF5x: Fix issue when calling NRF.setAdvertising while connected via BLE (fix #1659)
            nRF5x: 'dump()' not outputs `NRF.setSecurity` line if it has been called.
            Ensure that converting a valid pin to a boolean always returns true
            clearInterval/clearTimeout/clearWatch(undefined) now throw an error asking for just clearX()
              - this stops code accidentally clearing all timers/etc if it uses a variable that is undefined
            Allow NRF.setAddress to work even with services defined and a connection in progress

     2v02 : Fix string index calculation when using some regexes (fix #1602)
            Ensure Function.replaceWith puts scope after parameters (fix #1601)
            Ensure Graphics.* return the Graphics instance, to allow call chaining (fix #1580)
            Ensure DataView.byteOffset/byteLength is always set even if not specified (fix #1567)
            Added HttpServerResponse.setHeader
            HttpServerResponse now automatically sends `Connection:close` unless overridden (fix #1596)
            Fix sign of RSSI reporting with setRSSIHandler
            nRF52: Add docs for properties that weren't documented before
            nRF52: Add ability to connect to device with passkey authentication
            nRF52: Allow startNotifications to use Indicate if Notify doesn't exist (as per spec)
            nRF52: Add option for static passkey pairing with NRF.setSecurity
	    ESP32: update EspruinoBuildTools to esp-idf V3.1.2 - fix Wifi connect issues (multiple ssid)
            Revert PR #1459 as it broke neopixel functionality that worked previously
            nRF52: Disconnect RX pin after UART test at boot (saves power when in deep sleep)
            Serial.unsetup now sets pin state to STATE_UNDEFINED, which disconnects the pins internally
            Removed modulo on `new Date` h/m/s/ms arguments as it seems desktop JS is fine with out of range values
            Added `active` option to NRF.setScan/findDevices/requestDevices to allow scan response packets to be requested
            Add I2C/SPI baud rate checks (#1619)
            STM32: Add `E.setRTCPrescaler` to allow the RTC to be calibrated on Espruino Pico (fix #1607)
            nRF52: Fix slow Bluetooth connection if previously disconnected while using low power connection interval (fix #1605)
            Allow `Graphics.clear(true)` to reset state (font, color, etc) to default as well as clearing the screen (fix #1615)
            nRF52: Fix setScanResponse regression from 2v00
            nRF5x: Execute SWI1_IRQHandler when radio turns off instead of on+off. More efficient, fixed multiple advertising.
            Smartibot build added
            ESP8266: add CFLAGs to shrink build size (fix #1622)
            ESP32: update EspruinoBuildTools to esp-idf V3.1.3
            nRF52: Add FAT Filesystem support to MDBT42Q module
            Now save file modification time with FAT
            Fix segfault if `.clone` is called with `this==undefined` (fix #1628)
            Fix issue outputting char codes <8 after outputting hex char codes
            nRF52: Don't allow NRF.updateServices while a BLE restart for setServices is queued
            nRF5x: Don't sleep if we received any events since last sleep (fix #1572)
            Remove limit on the number of scopes that can be searched (fix #948)
            String.split - improve docs, split with RegExp now inserts the text after the final match
            RegExp: Add '|' operator (fix #1503)
            Switch ARM toolchain to gcc-arm-none-eabi-8-2018-q4-major
            Improve handling of timeouts for RAK8212 GPS
            nRF52: Now create exception if advertising calls fail (but ignore when in IRQ)
            nRF52: Add setAdvertising({},{scannable:false}) for disabling scan response
            nRF52: Add note about connectable:false requiring >=100ms intervals
            STM32: Fix issue where occasionally STM32 would be ~0.2s late waking from light sleep
            ESP8266: add Wifi.connect options channel and bssid for faster AP connects (fix #1595, #1640)
            Fix index in E.mapInPlace and improve docs
            nRF52: Add NRF.getSecurityStatus to allow devices to detect the current state of the connection
            STM32F4: Add Filesystem module
            STM32F3: Fix broken build
            nRF52: Fix nRF52840 advertising and remove duplicated advertising code
            Fix Software Serial receive when the frame has to be decoded inside the IRQ (fix #1654)
            Raise software serial receive buffer to 64 bytes (from 7)
            nRF5x: Add security options to NRF.setSecurity (courtesy of @vkolotov)
            nRF5x: Allow Serial1.setup(...) with only TX or RX pins
            Vector font removed from Espruino Original WIZnet build due to lack of spare flash

     2v01 : ESP32: update to esp-idf V3.1
            Fix issues with Class Extends
            Improve Tab Completions for extended classes
            Fix Storage.readJSON/readArrayBuffer memory leak (fix #1532)
            Fix potential out of bounds Graphics.scroll
            Serial.setConsole now warns if not used on hardware Serial
            ESP8266: implement hw_timer (fix #1511) to make soft serial and pwm work
            Fix Storage write error when skipping pages (fix #1539)
            nRF5x: When scanning, only use as much of IO queue as is needed
            nRF5x: If BLE/NFC/etc data won't fit in IO queue, drop whole packet
            Allow `a in b` to search 'fake' objects (#1534)
            Improve fast path when iterating over Uint8Array/ArrayBuffer
            Allow deletion of function properties (fix #1549)
            Add `{callback:...}` option for `.write` style functions - improve docs.
            ESP8266: deepSleep invalid microseconds (fix #1547)
            ESP8266: ESP_FLASH_MAX for ESP8266_4MB is wrong (fix #1551, #1553)
            Fix buffer overflow if bytesize/stopbits used in `Serial.setup` (fix #1510)
            Ensure jsvNewFlatStringOfLength tries twice (even if GC doesn't release memory, it reorders the free list) (#1559)
            ESP8266: Missing variable Flash Mode (--flash_mode, -fm) in ESP8266.make files (fix #1563)
            ESP8266: Remove hack added to get around SDK 1.4 bug (fix #1568)
            Reduce available hardware SPI/I2C instances to 1 on nRF52 (since this is all we implement atm)
            Add E.dumpFragmentation to show memory fragmentation (only for debug builds)
            Fix parsing of dates from before 1970
            nRF52: Fix some regressions in requestDevice (flagged up by asserts in debug build)
            Allow built-in objects to be created with `new X()`
            nRF52: Ensure Bluetooth stack doesn't do a reboot for non-fatal errors (just report them to console)
            BluetoothRemoteGATTServer.disconnect now returns a Promise
            nRF52: Jump out of low power mode after less BLE activity (2 reads/writes in 10 radio packets) (#1546)
            nRF5x: Fix NRF.setConnectionInterval when there's no connection (fix #1546)
            Explicitly mention Espruino not supporting CASE after DEFAULT in error (fix #1570)
            Ensure scope is saved for Class constructors (fix #1576)
            Add setNBCellOn for RAK8211-NB (fix #1581)
            Now escape chars <8 as octal, and add escape of vertical tab 
            Add Graphics.createArrayBuffer(... {interleavex:true}) to allow faster support for P3 LED panels
            Add Graphics.fill/drawEllipse and move fill/drawCircle to use the same code
            CC3000-specific build removed on Original Espruino board (lack of space)

     2v00 : Allow changeInterval with large (>32 bit) intervals (fix #1438)
            changeInterval now changes the interval immediately when it's called inside the interval it is changing (fix #1440)
            Fix parsing of try..catch when not executing (fix #1439)
            Add extra ReferenceError checks, even if variable is not used
            Allow Ctrl-C out of while...continue loop (fix #1441)
            Fix bug if using an undefined member of an object for (fix #1437)
            Allow to iterate over prototype chains down from Array and Object
            Add for(var i of array) to iterate over elements
            Added getter and setter support
            Stop parsing blocks if not executing (fix #572)
            Fix stack overflow if interpreting a file full of '{' (fix #1448)
            Fix exception when performing record access on object from getter (fix #1454)
            Switch to non-recursive StringExt copy (fix #1451)
            Fix rounding errors in fillPoly -> improve vector font rendering
            Fix issue that caused 'dump()' not to report variables/functions on Pixl.js
            Add E.lookupNoCase to allow searching case-insensitively for Object keys
            Fix HTTP Chunked transfers when the server uses lowercase headers (fix #1458)
            Fix TypedArray.indexOf (fix #1468)
            Allow require('Storage').write('a','',0,15) (zero length data) (fix #1465)
            edit() now chooses the shortest way to describe the function
            Fixed bug when RegExp.match/test called on non-strings
            Added Global isFinite
            Add missing ArrayBufferView.filter
            Added Array.find and findIndex (also for ArrayBufferViews)
            Fix unreliable ArrayBufferView.indexOf (#1468)
            Added String.startsWith/endsWith/includes (#1302)
            parseFloat(".s") now returns NaN
            Fixed /\S+/.test(" ")
            Added Storage.getFree() to return available space
            Enable E.setTimeZone on boards with very little flash memory
            Lower saved code area to 2k on micro:bit (from 3)
            Remove RGB colour handling in setColor on devices with low flash
            Reduce available variable count on STM32VL - we were too low on RAM
            Added Graphics.asBMP/asURL/dump - allowing easy debugging of Graphics via IDE
            Allow '.then' on already-resolved promise (fix #1476)
            Stop atob adding trailing 0s when strings are not a multiple of 3 long
            Reconstruct start and end newlines when dumping multi-line functions  
            Fix regression parsing methods in classes on embedded (fix #1479)
            nRF5x: Add options argument to NRF.connect and BluetoothDevice.gatt.connect, allowing a connection interval to be specified
            nRF5x: Start renegotiating speed after 0.1ms, not 5s. Massively improves connect speed.
            nRF5x: Now queue up to 5 UART TX packets per transmit interval (was 1 previously)
            nRF52: Add Dynamic Interval Adjustment - default to 2x connection speed, but idle at 10x slower if not used for 2 minutes
            nRF5x: Add NRF.setConnectionInterval() to allow connection speed to be set manually
            RuuviTag: invert LED1, LED2 & BTN in software so LED.set() does what you'd expect
            Console now doesn't print quotes around object keys if it's not needed
            Added `E.toJS` to allow very compact JS data stringification (similar to `JSON.stringify`)
            Output the current timer number as a comment in `dump()`
            Don't print `=undefined` to console if line is empty
            Added RAK8212 (and include SMS/GPRS code in RAK8211/2 builds)
            Graphics.stringWidth now takes account of newlines
            nRF52: NRF.requestDevice now resolves as soon as a device is found. Faster and better in congested areas
            Replace use of obsolete 'usleep' function in Linux builds (fix #1455)
            Add Ethernet.getIP/setIP callbacks for Wiznet to bring them in line with WiFi (fix #1482)
            Fix Math.round for numbers > 32 bit (fix #1485)
            Pixl.js menu now resets font alignment, and down arrow icon is fixed
            Now check for ReferenceErrors in global scope
            Fix Array.shift (returned a NAME, rather than the value)
            Add sanity check for names returned from Functions and fix Array.pop
            Stop characters getting dropped when pasting large amounts of data into Linux build
            nRF5x increase JsSysTime accuracy to 2^-20 from 2^-16 - drastically improves Util Timer accuracy
            Added support for Software Serial ports (for low baud rates, eg. 9600)
            Fix JS state restoration issue (eg. inside switch would cause errors)
            Added Graphics.drawPoly
            Add Graphics.asImage to turn a Graphics instance into an Image that can be used with drawImage
            Add Graphics.createImage to allow creation of a 1 bit image direct from a string
            Use 32 bit floats for E.FFT, not 64 (fix #1443)
            Automatically shut down UART if both pin states are changed
            Fix `setDeviceClockCmd: Unknown Device` when using `LoopbackB.setConsole()` on WiFi board
            Fix non-UART serial regressions (after software serial additions)
            Pixl.js: Add Pixl.setLCDPower to allow the LCD to be powered off, more than halving power consumption
            nRF5x: Allow NRF.setScan and NRF.findDevices to take the same search filters NRF.requestDevice does (fix #1496)
            Fix buffer overrun if we have to reallocate a pointer to argument lists when calling a function (fix #1491)
            Fix stack overflow if executing regex full of hundreds of open brackets (fix #1487)
            Fix issue where STM32F4 USB could lock up if TX during heavy RX
            Improve `E.mapInPlace` docs, and allow it to work with no map (eg pass straight through)
            Added non-standard Uint24Array, because it's very useful for RGB
            ESP8266: add CFLAGs to shrink binaray files (fix #1499)
            ESP8266: fully integration of analog pin A0 (fix #1495)
            ESP32: update sdk to esp-idf 3.0.1, set Espruino build tools back to master branch
            Allow btoa to work for arrays as well as Strings (fix #1509)
            Allow E.mapInPlace to merge bits from multiple source elements, also add option for msb/lsb first
            Remove Graphics.scroll/drawCircle/fillCircle on devices with low flash to allow builds to fit again
            Remove BluetoothRemoteGATTCharacteristic.writeValue on NRF51 (accidental inclusion - it's not required)
            Double IO buffer size to 256 (1k bytes) on boards with 96k of RAM or more (or NRF52)
            nRF5x: allow arbirtary baud rates to be specified for UART
            On devices with low flash, ensure atan2 uses the slower/smaller atan implementation
            Move FFT back to 64 bit if low flash (it uses less memory!) and optimise for flash space
            Remove new Graphics.createImage/asBML/asURL/dump on Original Espruino Board (not enough space) 
            Remove Olimexino from build (too difficult to slim down build and very low usage)
            Remove Software Serial from boards where we're low on flash
            Increase size of saved code area from 3*4k to 10*4k on RAK821x boards
            Fix 'Can't extend undefined' when using Object.setPrototypeOf on a function
            nRF52: Added NRF.HID event for two-way BLE HID communications
            nRF5x: Remove multiple writes per connection interval (more trouble than the speed improvement is worth)
            Fixed hang if trying to allocate Storage greater than total storage size in a fully erased Storage area.
            Pixl.js: Fix 30s pause when closing sockets on WIZnet W5100 (fix #1306)
            Remove HASH/hashlib from all builds as it was confusingly in some and not others. Now use 'crypto'
            require('crypto').SHA1 is now JS in Espruino Original to cut down on the flash required
            Added 'heatshrink' library to expose built-in heatshrink compression to users
            Fix assert fail when calling Function.apply with an Object with non-numeric keys
            Fix issue when AT lib has to process multiple custom line handers in one packet
            Espruino WiFi: Fix unreliable send when receiving lots of data on another socket
            Espruino WiFi: Only rename `EspruinoWiFi` to `WiFi` if not found (allows easier debug)
            Check Flash Storage for modules when using `require`
            Add 'bits' option for Software SPI
            STM32 reset pin IRQs before storing the state - makes lost setWatches far less likely
            Ensure that setBusyIndicator updates output state after the very first initialisation.
            MDBT42Q: Add LED2 var in the Espruino interpreter, but don't use it for the bootloader
            ESP8266: release heap used by logDebug(true) (fix #1508)
            ESP8266: remove SHA256 SHA512 (fix #1517)
            Ensure `Date.getTimezoneOffset()` returns the correct timezone offset (fix #1515)
            Search for and execute files '.boot0'/1/2/3 in Storage at boot time if they exist
            Pixl.js: reduce saved code area to 9 x 4kb to allow for extra features
            ESP8266: switch to SDK 2.2.1 (fix #1207)
            Fix Serial port path regression on Linux, and add docs
            microbit: remove line-by-line debug capability to free up some space
            Added ES6 String.prototype.repeat

     1v99 : Increase jslMatch error buffer size to handle "UNFINISHED TEMPLATE LITERAL" string (#1426)
            nRF5x: Make FlashWrite cope with flash writes > 4k
            Increase max size of native strings on platforms that support it - 16 bit to 32 bit (#1432)
            Fix stack size detection on Linux (fix #1427)
            Fix strncat/cpy bounding issues (fix #1425)
            Promises now ignore a second resolve/reject (fix #1433)
            Fix stack overflow if void void void... is repeated many times (fix #1434)
            Fix font rendering issue caused by signed bit field handling by GCC on non-x86 platforms (fix #1436)
            Added E.reboot() to allow hard reboots from software (fix #1429)
            Added 'Graphics.getInstance()' for more platform independent graphics
            Added VT100 'erase in Display' to Terminal
            In REPL, use x.toString() for objects if we know their name and it is available
            Pixl.js add BLE aerial test to self-test, now also start immediately on BTN4 at boot

     1v98 : Allow Crypto SHA1 without SHA256/512 (for ESP8266 where flash is scarce)
            Add better docs for the form of Wifi callback functions
            Modify ESP8266/ESP32 callbacks to match the node.js style used elsewhere
            nRF52: fix pin.toggle() on software-negated pins
            Pixl.js: Reorder pins so 0..13 are also D0..13 for better Arduino compatibility
            Fix dump() when used with code written using E.setBootCode(..), (fix #1398)
            Allow parseInt/parseFloat to be used on very large strings if the number doesn't extend right to the end (fix #1397)
            nRF5x: Fix memory leak on NRF.connect
            Fix memory leak if an exception is thrown within a rejected promise
            ESP8266: rewrite and restore to use the storage lib (imp #1380)
	    ESP8266: Add missing option ssid_hidden for Wifi.startAP() (imp #1358)
            Fixed double-connect issue for TCP sockets
            Pixl.js: Ensure changes to bitmap fonts
            Pixl.js: tweaked bias/contrast to improve display quality
            ESP32: update esp-idf to v3.0. BLE support - thanks to @jumjum. Erase flash before flashing. vars now 2500
            ESP8266: rearange rf_cal_sector (fix #1294)
            ESP8266: Wifi.scan() now return authmode as text 
            ESP32: Fix accidental initialisation of UART3 when switching to Telnet (fix #1362)
            nRF52: Added `NRF.setAddress` to allow the MAC address to be changed
            Added Graphics.setFontAlign for font alignment and rotation
            Make software I2C bitrate and waveform more accurate
            Move default I2C bitrate to 100kbit/sec
            Linux: don't create a espruino.flash file if we're not writing to flash
            Add height check for Graphics.createArrayBuffer(...vertical_byte:true) (fix #1421)
            Add sanity check for debug trace print statement (fix #1420)
            Fix handling of exceptions in switch statements (fix #1352)
            Fix 'return when not in function' regression when returning inside a catch block (fix #1422)
            Don't load saved firmware images from different firmware versions - saved JS code still loaded (fix #1174)
            Remove Graphics.setFontAlign and Graphics.getModified on devices with low flash memory

     1v97 : nRF52: fix NRF.on('connect',...) issue
            STM32: Fix setDeviceClockCmd error for USB.setConsole()
            nRF5x: Fix getPinMode, which fixes SW I2C after save()
            Thingy52: Don't report contents of 'Thingy' in 'dump()'
            Thingy52: Allow multiple sounds to play at once
            nRF5x: Ensure Waveform triggers a finished event
            Thingy52: Enable simple bootloader, add travis build for DFU
            Add Serial.inject to allow data to be added as if it was received from that device
            Fix UDP handling so that it copes with packets not all being received in one go
            STM32L496: increase variables - use full 320kB of RAM as it is contiguous
            Add a maximum time for setTimeout/setInterval (100 years)
            Fix Storage.write when writing partial file of the same length and initial contents
            Fix corrupted timer channels returned by Pin.getInfo
            Add command history to debugger
            Remove process.env.EXPORTS (EXPTR does the same but takes less space)
            Thingy52: Add 9 axis MPU support
            Errors now store message in 'message', not 'msg' (fix #1366)
            Ensure 'in' operator checks the prototype chain (fix #1365)
            Promise.resolve now handles promises/thenables as arguments (fix #1363)
            try..catch now creates exception in its own scope (fix #1367)
            Thingy52,Pixl.js: add default NFC URL of the Espruino IDE 
            Add ArrayBuffer.byteLength property (fix #1374)
            setWatch(..., {edge:"rising",debounce:25}) is now default for built-in buttons
            Pixl.js: add function for easy menus, build in graphical_menu.js
            Fix regression in MDBT42Q advertised name
            nRF52: Add E.getBattery as a more global battery percentage function, deprecate `Puck.getBatteryPercentage`
            Fix '.buffer' regression in 'JSON.stringify(new Uint8Array([1,2,3,4]).buffer)'
            Allow `typeof 123 .testing` without an exception (fix #1351)
            Add crypto.AES to Puck.js and other nRF52 Espruino devices

     1v96 : ESP8266: no callback if SSID is not available (fix #1297)
            ESP8266: esp8266 wifi getStatus doesn't show savedMode (fix #752)
            ESP8266: cleanup defines WIFI_DBG and NET_DBG for RELEASE
            ESP8266: switch to single ld file for ESP8266_4MB board
            Allow JS modules to be built-in by adding files to JSMODULESOURCES
            Fix slow/hacky handling of 7 bit serial data for STM32
            Add more stack checks so invalid code `typeof typeof typeof x100` can't break stack (fix #1310)
            nRF5x: Fix PWM output via Waveform class
            Fix free stack checking on ARM
            nRF52: Make slightly more space available for stack
            nRF5x: Move to SDK 12.3
            Stop stack traces from being gathered in functions for Ctrl-C (fix #1313)
            nRF5x: Fix crash if I2C is used before being initialised (fix #1301)
            Internal printf can now pad with spaces
            Add `E.dumpFreeList` in non-release builds to help with debugging
            Fix mild memory leak in jsvMakeIntoVariableName that caused GC to run more often than normal
            E.toString now tries harder to allocate a Flat String, and works with no-alloc for Uint8Array/FlatStrings
            WIO_LTE fix SD card initialisation
            Improve SD card reliability on all boards by trying to initialise multiple times before failing
            Remove forced inlining in variable inspection functions (reduces flash usage by ~10k)
            Remove un-needed DNS lookup for localhost
            Add WIZnet UDP support
            Tidying up build to avoid making un-needed bin, hex or lst files
            Simplify flash save (and help debugging) by using the 'fake flash' implementation on Linux builds
            Added Graphics.scroll command to scroll graphics contents
            Added 'Terminal' class with built-in VT100 terminal
            Tweak Espruino logo to be exactly 32 chars wide
            Improved code for returning console device to the most useful place
            Fix pinToString for devices with port A but no port B
            Speed improvements for ArrayBuffer Graphics
            Tidied up bootloader - devices with one LED now flash LED when button pressed
            Simplify data returned by process.env
            Add process.env.MODULES - to contain a list of the libraries provided in the firmware by require
            Include WiFi and AT libraries inside Espruino WiFi builds
            Add 'E.asm' placeholder to detect E.asm calls that haven't been replaced by the IDE
            Add process.env.EXPTR to link to table of functions - will work better for compiled code over BLE
            Added SAVE_ON_FLASH_EXTREME for HYSTM32_28, where we're now cutting out some Math.X functionality to keep builds going 
            Added `jshFlashGetMemMapAddress` to allow remapping of addresses for ESP8266/ESP32 without loads of code duplication
            Remap peek8/16/32 addresses on ESP32/ESP8266 so it can be used on flash memory
            Swapped save/load/E.setBootCode to use the flash library
            Allow STM32LL port to write 32 bits to flash at a time to bring it in line with other ports
            Allow flash writes *from* unaligned addresses on nRF52 and ESP8266 (previously this crashed the ESP8266)
            Update process.ENV.EXPORTS to bring it in line with what the compiler uses
            Now set 'this' correctly for Arrow Functions
            Add ES6 classes and 'super'
            nRF5x: Move all bluetooth events to event queue (removing MEMORY_BUSY issues)
            Fix potential issue where EV_TYPE_MASK enum could be set incorrectly  
            setWatch's edge argument can also be an integer now
            Add 'data' option to setWatch to allow clocked data to be decoded easily
            nRF52: Increase flash available for stored code from 12kB for 40kB
            Now store/display appreviated commit in process.env, remove build date
     1v95 : nRF5x: Swap to UART fifo to avoid overrun errors at high baud rates
            Ensure Exceptions/errors are reported on a blank line
            Internal: Added initialiser argument to jsvNewStringOfLength
            Internal: Added jsvObjectSetChildVar/jsvObjectSetChildVar/jsvObjectSetChildVar
            Internal: Fix jsvCopy if given a NAME_INT/etc
            Added ES6's Object.assign
            nRF5x: NRF.setScan now reads service data automatically
            nRF5x: NRF.findDevices aggregates data from multiple advertising packets
            nRF5x: Remove app_uart and use nrf_drv_uart with double buffering - fix uart overflow errors (fix #1238)
            nRF5x: Fix issue with findDevices/setScan servicedata when all digits of service are numbers (eg "1809")
            Fix memory leak in tab completion code
            Add `E.errorFlag` event to allow JS to respond to internal errors
            Use Esc[J VT100 code when cycling through command history (much faster REPL on low bandwidth connections)
            ESP8266: Remove debugger again as it will never work on 8266
            ESP8266: Enable unaligned reads for ESP8266_4MB (fix #1240,#837)
            ESP8266: move code save section to fist partition for memory mapping for ESP8266_4MB (fix #1240)
            ESP8266: Add GPIO16 as D16 without watch (#1206) but soft PWM/I2C/SPI/etc 
            ESP8266: Remove osprintf for RELEASE=1 
            Internal: Networkjs now forwards `socketType` - laying groundwork for UDP over AT command (#1232)
            Added simple RegExp implemention (partial fix #256)
            Speed up JSON.stringify for Arrays, and output non-numeric array elements in REPL (fix #64)
            nRF5x: Bump nRF52-based boards variable count from 2000 to 2500 (fix #1215)
            Ensure Ctrl-C doesn't redraw the input line if it's already empty
            Added String.replace(regex, function) (fix #1256)
            With E.setFlags({pretokenise:1}), ensure stack traces are not tokenised (fix #1258)
            Allow digitalWrite/Read to take an object as an argument (calling .write and .read on it)
            Add `E.getAddressOf` to allow embedded targets to get memory addresses for DMA/etc
            nRF5x: Fix issue where doing a soft reset in the middle of some BLE ops could cause an assert in debug builds
            nRF5x: Manufacturer Data is now decoded in advertising packets
            Fix memory leak when allocating DataViews
            nRF5x: Fix memory leak on BLE notifications
            Ensure net/http .listen return the server instance (fix #1276)
            nRF5x: Allow Manufacturer Data to be specified with setAdvertising
            Internal: Fix memory leak in jsvArrayPushAll
            nRF5x: jsvArrayPushAll memory leak fixes NRF.findDevices memory leak when services present
            Internal: jsvNewIterator now has an option to iterate over sparse arrays as if they weren't sparse
            Fixed some built-in functions that misbehaved when given sparse arrays
            Puck.js: Allow flash memory protection to be overwridden with E.setFlags
            Fix lexing of '/*/' as a complete block comment
            nRF5x: Add support for negating pins in software (eg. buttons/LEDs)
            Add `E.setFlags({unsyncFiles:1}` which doesn't sync the file to the SD card after each write - it's *much* faster
            Filesystem API now uses flat strings (avoiding the 512 byte copy for each call)
            Increase default internal SD card bitrate to 4MHz (from 100k)
            nRF5x: Handle promise completions and advertising using IO queue, to avoid MEMORY_BUSY messages (#1277)
            Allow E.HSBtoRGB to wrap 'hue' value, and allow it to return an array of [r,g,b] (fix #1283)
            Remove spikes when changing pin state (fix #1274)
            Changes to reduce code duplication in jswrapper.c
            Fix `E.setBootCode` when no argument is supplied
            Add WIZnet W5500 support to Espruino WiFi build

     1v94 : Allow Espruino boards to reset straight out of the DFU Bootloader             
            Improvements in handling errors in code running in IRQs
             - if writing to disconnected Bluetooth device, throw data away immediately
             - Drop chars if output buffer is full while waiting in an IRQ
             - Handle out of memory errors in jsvCreateNewChild
             - Do not garbage collect inside an IRQ
            On nRF52 devices, allow button press at boot to clear out peer manager data
            Work out length of typed array with offset correctly (fix #1204)
            nRF5x: Add Watchdog timer handling
            nRF52: start new connections on idle to ease memory allocation conflicts between code execution & IRQs
            nRF52: Ignore INVALID_STATE from CONN_PARAM_UPDATE_REQUEST (it can happen if we disconnect and then SD requests an update)
            Fix Date.toString for dates before 1970
            STM32: Fix handling of months when setting the internal RTC
            Move to a faster jsvNewFlatStringOfLength which avoids blocking memory allocation
            nRF5x: If a task is in progress, report the task ID (BleTask enum)
            nRF52: Report central mode promise errors correctly if returned by softdevice
            Remove 'out of memory' warning messages (it's stored as a flag anyway)
            nRF5x: Don't disable IRQs completely for some things - only disable Espruino ones
            Fix tab complete for Pins (fix #1213)
            ESP8266: Fix load() causes endless loops (fix #1037)
            ESP8266: Wifi library doesn't handle {password: null} (fix #753)
            ESP8266: make topstrings and topreadonly work on Mac OS X (fix #1210)
            Change order of execution for init - E.on('init',...) now executed before onInit
            Added Error flag to show if a UART overflow has occurred
            Change more instances of jsWarn to jsException
            Avoid printing error messages during execution, and report to console on idle when if errors were flagged (fix #766)
            Increase HTTP server and client version from 1.0 to 1.1 (needed for Websockets on Safari)
            Stop 'require' creating an undefined Module entry in the modules list (fix #1218)
            Stop require dumping filesystem errors as well as 'module not found'
            Now throw an exception when writing to a closed socket (fix #1220)
            Set the internal 'conn' variable to false when a connection closes to avoid confusion
            nRF5x: Fix typo so we wake every 4 min for RTC, not 0.25 sec!
            process.memory() now reports time taken for GC and vars GC'd
            Slightly more aggressive idle GC on most platforms (at 5% free)
            Don't warn the user when we had to run a GC pass during execution
            Fix issue drawing on right-hand side of rotated graphics where H>W (regression in 1v93) 
            If >1 button, set pin state correctly at boot/reset
            Add an argument to `reset`. `reset(true)` will now cause all Flash memory to be cleared as well.
            Puck.js: Holding down the button while booting (past the the 5 LED flashes) will now cause data saved in Flash to be cleared
            STM32: Remove the 'utility timer' from the list of available PWM pins, fixing A0/1/2 PWM on F4 (fix #1229)
            Disable Graphics.createCallback on devices with small amounts of flash memory - rarely used on those devices and fixes HYSTM32_28 build

     1v93 : Ensure that specifying too many advertising UUIDs causes an exception, not a reboot
            nRF5x: Fix for time jump caused by reentrancy in jshGetSystemTime
            Fix regression causing multiple end/close callbacks when using standard TCP/IP socket client/server
            Ensure NetworkJS reports receive errors back correctly
            nRF5x: Fix issue where connect and immediate disconnect could in some cases trigger an error from nordic's libraries that'd cause a reboot
            Fix regression that caused Original Espruino to have lost Filesystem/hashlib/neopixel support in 1v92
	    Re-add TV output to Original Espruino
            Fix some stack overflow bugs on Linux found by fuzzing (#1147)
            Remove un-needed code for parsing '.' in var statement (#1147)
            Add autocomplete for pin names (fix #1124)
            Add Array.indexOf fromIndex support (fix #162)
            Puck.js: Add BluetoothRemoteGATTServer.startBonding to allow bonding to be initiated when Puck.js is a central
            Fat FS: closedir after readdir, FS errors should be catchable (#1164), fs.statSync (#1163)
            Allow hardware (CTS) flow control (fix #1165)
            nRF52: Add AntiCat's patch to Nordic's NFC library to cope with malformed NFC requests
            Puck.js: Fix increased battery drain after NFC usage (fix #1171)
            Puck.js: Fix WS2811 output library that would output bad data after neopixel waveform (fix #1154)
            nRF52: Seed random number generator at boot (fix #1166)
            Stop trailing decimal point if there are no digits after it - which could cause issues in JSON
            Don't enter debugger if we're in the middle of uploading (echo_off_for_line) (fix #644)
            Added Date setters (fix #504)
            Allow Timezone to be set for Date with E.setTimeZone(...) (fix #530)
            Added RegEx lexing (part of #256)
            Puck.js: fix error 8 from NRF.sleep during an active connection 
            nRF5x: Fix `NRF.updateServices` when a 128 bit service shares the same 16 bit UUID
            Add 'errors' option when using `Serial.setup` to enable error handling (and turn it off by default as it can fill the input queue)
            nRF52: Re-initialise services and HID after a `save()` (fix #1185)
            nRF5x: Add NRF.getAdvertisingData
            nRF5x: Allow array of objects in NRF.setAdvertising (fix #1188)
            Fix internal vcbprintf JSON dumping
            nRF5x: NRF.findDevices will now throw an exception if no callback is supplied
            nRF52: Added BluetoothRemoteGATTServer.getSecurityStatus to check the status of the link
            nRF52: Disable auto-whitelisting by default, add with `NRF.setWhitelist` (fix #1187)
            nRF52: Allow secure Bluetooth LE connections
            Don't draw font characters that are off the edge of the screen
            Make atob and btoa use flat string for larger amounts of data (faster & more memory efficient) (fix #1192)
            nRF52: Pull in Nordic SDK13 code to crash caused by writing large characteristic (fix #1181)
            Puck.js: Added Puck.magTemp() function to get the magnetometer's temperature as well
            nRF5x: Fix issue where 'NRF.sleep()' called while a connection was active could cause Espruino to go into a high power draw mode
            Fix Object.setPrototypeOf when called on undefined (fix #1194)
            Fix dumping of an ArrayBuffer containing data (new ArrayBuffer([1,2,3]) isn't valid)
            Fix setAdvertising regression where name would be lost after save() (fix #1193)
            Add `E.set/getFlags` to allow interpreter state to be controlled from one place
            Add `E.setFlags({pretokenise:1})` to dynamically turn on pretokenisation (fix #1178)

     1v92 : nRF5x: Fix issue where Espruino could crash during save() if the flash got into a strange state
            Added Pin.toggle() function
            Fix implicit casting to bool/number on ArrayBuffers (fix #1030)
            Fix jstExecuteTaskChecker bug, and allow jstExecuteFn to take a userdata argument
            Puck.js: Reduce IR LED to 10% duty cycle
            Puck.js: Allow Puck.IR to take pins for external IR LED (fix #927)
            nRF52: Allow arbitrary NFC data to be specified (fix #1021)
            nRF5x: Allow multiple advertising packets to be set at once with NRF.setAdvertising
            nRF52: Add 'properties' object to BluetoothRemoteGATTCharacteristic
            nRF52: Perform write without response if that is what is required 
            Pico/WiFi: Allow USB HID to work on Windows (from @nailxx)
            Allow Puck.js/nRF52 devices to drive Neopixel/WS281x/APA10x LEDs with require("neopixel").write (fix #1023)
            Fix crash in JSON.stringify for zero-length typed arrays
            Fix precedence of 'void' keyword (fix #1079)
            nRF52: Add BluetoothRemoteGATTCharacteristic.startNotifications (fix #959)
            nRF52: Added BluetoothDevice.gattserverdisconnected event
            nRF5x: Report back reason codes for BLE disconnect
            Added DataView class
            nRF52: char.readValue now returns DataView to be more Web Bluetooth compliant (fix #1091)
            nRF5x: Fix explicit disconnect being able to reboot Puck (fix #1088)
            nRF5x: Respond to conn_params update request, fix puck-puck disconnection after ~65 sec (fix #1089)
            nRF52: Change connection params for central mode so NRF.setLowPowerConnection affects connection speed
            Un-inlining jsvGet*AndUnLock functions to give us a little more free flash
	    ESP8266: RELEASE=1 sets WIFI_DBG and NET_DBG to 0 to shrink firmware size
	    ESP8266: Add Wifi.setAPIP() and Wifi.setIP
	    ESP8266: Add i2c clock stretch (#1097)
	    Fix E.FFT output (enable magnitude when one array specified)
            Puck.js: Correct reading if using analogWrite to red LED and *then* using Puck.light()
            Improved build process for all boards
            Pin.toggle now returns a boolean (fix #1111)
            nRF52: Now use 'high drive' mode for GPIOs
            Puck.js: tweak IR duty cycle, with high drive GPIO range is ~3x more
            nRF52: switch compilation to size optimisation, not speed
            nRF5x: Allow services to be advertised (fix #996)
            JSON.parse now throws an exception if an incorrect value type is found (fix #1117)
            Pipe close event handlers now use 'this' arg - solves auto-closing pipe when piping from HTTP
            nRF5x: stop app_timer NRF_ERROR_INVALID_PARAM errors (trying to sleep for too little time)
            Added flash emulation to Linux port
            Increase max graphics size from 1023 to 32767
	    Add Fat File System to boards with large Flash (ESP32)
            nRF52: Don't get stuck in 'HID Busy' state if a HID send failed
            Change name of socket close internal variable so it doesn't conflict with Pipe's close call
            Stop pipe from causing errors if fields of the requested names exist but aren't functions
            nRF52: Fix upgrade from older firmwares if saved code is in flash, reduce virtual pages to 2
            Fix segfault detected by fuzzing (#1133)
            Fix so that end of file triggers pipe.end event
            ESP8266: Add BOARD ESP8266_4M with 1600 vars, 64K save area and GRAPHICS (#1110)
            ESP8266: Add ESP8266.deepSleep(micros, option) (#1102)

     1v91 : Fix recent regression if no Boot Code defined at startup
            Fix handling of return of rejected promise within a promise
            Fix regression where HTTPS without cert/ca or key failed
            nRF52: Making NRF.getPrimaryService/etc more robust
            nRF5x: Add NRF.getAddress() - fix #1001
            Fix bug that caused load() not to clear memory if only E.setBootCode was used
            microbit: Update Espruino with pin polarity, so saved code gets loaded without BTN1 pressed
            Fix bug that caused Bluetooth/TV/USB objects to be added in devices that didn't support them (fix #832)
            nRF52: Increase custom UUID count from 3 to 10
            Adding Global built-in objects like SPI1/Serial1 and Bluetooth to the docs
            Puck.js: Tweak battery percentage calculation to try and make it more linear
            Puck.js: Adjust Puck.light() levels based on battery percentage (and add comments)
            nRF5x: Fix E.hwRand() (fix #1010)
            Ensure tab complete/others include the Object proto even on functions/strings
            nRF5x: Add NRF.restart() to force the restart of the Bluetooth Softdevice if required
            nRF5x: Add E.setLowPowerConnection(bool) to allow continuous connections to Puck.js (fix #995)
            Allow implicit conversion of hexadecimal strings to numbers (fix #1016)
            Allow arrow functions inside nonexecuting functions (fix #1011)

     1v90 : Fixes for Promise.all (passing in non-promises, pre-resolved, and ordering) (fix #976)
            Fix arrow function bug when parsing multiple arguments
            Added more helpful error messages for TLS
            Allow `Modules.addCached` to take a function (makes module loading more memory efficient)
            Re-add Espruino's old `rand` function (so no malloc, and ~1kB RAM, ~3kB ROM saved)
            nRF5x: Ensure 'NRF.sleep' works even when connected
            Fix bug when using >32 bit integers as array indices (fix #984)
            Fix bug when parsing '.catch' while not executing (fix #989)
            Stop PWM 'glitching' when moving from a nonzero value down to 0 (partial #991)
            nRF5x: Add multi-channel hardware PWM (fix #991, fix #972)
            'dump()' now outputs code written with E.setBootCode as well (fix #999)
            nRF5x: Remember advertising information even after softdevice reboot  (fix #997)
            nRF51: Remove heap placeholder on nRF51 as not needed since no malloc. Increase nRF51 var count (fix #985)
            nRF5x: 'connect' event now contains address of device that has connected, and fix docs
            nRF5x: Add a 'NRF.disconnect' function to disconnect a client that has connected to Puck.js
            nRF5x: Fix timing accuracy problems with setWatch

     1v89 : Allow entering of multi-line Templated Literals on the command-line (fix #970)
            Make lexer fail when parsing non-templated strings with newlines in 
            Add 'let' and 'const' keywords - treat them like 'var' for now
            Increased findDevices timeout to 2 seconds
            Allowed 16 bit UUIDs to be specified as simply "ABCD" (no "0x")
            Improved BLE error messages (especially from Promises)
            Fix STM32F1 regression caused by F4 LSE fixes
            Fix comma operator regression caused by recent arrow functions addition
            Remove RTC changes for STM32F1
            nRF5x: Make sure that updateServices(notify) on a non-notifyable service will just error, rather than reset (fix #973)
            nRF5x: Ensure setWatch doesn't reset pin state
            nRF5x: Reset pin states to default on 'reset()'
            nRF5x: Move advertising back to 375ms (more reliable connections)
            Puck: allow Puck.mag to work while magnetometer is on

     1v88 : jshSetEventCallback callbacks now get an argument with the channel number
            Tab complete now offers a much better set of completions (fix #926)
            Fix emitting of events with long names (fix #906)
            Ensure 'af_opendrain' pin mode gets remembered when saving (fix #890)
            Add second Promise.then argument (fix #869)
            Fix 'chained' promises (fix #894)
            Fixed memory leak when automatically converting a simple object to a String
            Added ES6 Template Literals
            Initial commit of ES6 arrow functions
            Add 'opendrain_pullup' pinMode (including emulation on STM32F1)
            Make OneWire use opendrain_pullup (no resistor needed for short runs now)
            Add Software I2C (with opendrain_pullup) (ref #549, fix #29)
            Cope with new escape codes for home and end on Ubuntu 16.04 (27,91,70/72)
            Tweak VGA output back porch to 2ms (so leftmost pixels always on screen)
            Fix regression with 2 concurrent waveforms on different pins (fix #930)
            nRF5x: add updateServices, and allow setServices to be called multiple times (partial #936)
            Added Puck.getBatteryPercentage() utility function
            nRF5x: setServices can now uninitialise SD in order to remove added services
            Added E.lockConsole() for use with E.setPassword()
            Calling jsvRemoveChild at end of array now updates the length (fix #946)
            Allow padding to be specified as 3rd argument of JSON.stringify
            JSON.stringify now dumps typed arrays as arrays (fix #489)
            nRF52: BLE HID support and switchable Nordic UART
            Fix STM32 regression where pinMode was set when it shouldn't have been
            Add Third option to pinMode to allow the pin mode to be set while keeping it 'unforced'
            Save and dump now keep track of whether pin mode had been forced or not
            readFile (and now uses Flat Strings to allow more memory efficient reads (fix #932)
            nRF5x: Add ability to get RSSI of current connection (fix #928)
            More STM32 changes to LSI->LSE clock switchover to fix RTC misconfiguration on Espruino WiFi
            Move LED + BTN definitions to Symbol Table (allows autocomplete)
            When moving console before printing has started, move all buffer contents as well
            Fix regression where replacing a function starting with 'return' with another would cause errors
            Fix potential issues with Telnet server and return values from netCreateSocket/netAccept on some platforms (fix #931)
            nRF5x: Add Puck.js self-test code, fix issue where analogRead reset pin state
            nRF5x: Change central mode API to mirror Web Bluetooth
            Fix switch fall-through to default (fix #964)
            Started using jsvObjectRemoveChild to remove some internal object properties that are undefined (frees some variables)
            Added E.dumpLockedVars() in non-release builds to help debug memory leaks in libraries
            nRF5x: Added NRF.findDevices as a helper function to easily list BT devices in range
            Console now prints the type of Objects if their constructor is in the root scope
            nRF5x: setScan/findDevices now parses advertising data
            nRF5x: Added Web Bluetooth style requestDevice function
            Add spaces between large tab completes
            Correct the handling of exceptions in promises
            Ensure that exceptions have a 'stack' attribute if they can have children
            nRF5x: Added list of free flash areas
            Make sure Puck.js users can't overwrite bootloader/softdevice (doing so would brick the board)
            Fix micro:bit/nRF51 ctrl-c behaviour (fix #905)
            Simplified process.env on devices with little memory
            nRF5x: fixed serial number reporting
            Move button state setup to jshResetDevices
            Had to remove 'dump()' and SW I2C on devices with very little flash memory (Olimexino/Micro:bit)

     1v87 : Add support for compiling with float-abi=hard (even if it doesn't give us real-world benefits)
            Add shortcut for quick execution of common call types
            Fix BBC micro:bit save() regression from 1v86
            Fix 'lock overflow' when calling methods with 'this' bound (fix #870, fix #885)
            Fix jsvStringIteratorGetCharOrMinusOne for zero-length strings
            Allow tab-completion straight after '.'
            Make sure execution stops for native functions if there's an error when parsing arguments
            NRF5x: remove setName and add functionality to setAdvertising, along with advertising interval
            NRF5x: allow raw advertising data in setAdvertising
            Add E.setPassword - allows Espruino console to be locked
            Fix pin header numbering for BBC micro:bit (it changed for the production version) (fix #896)
            Allow Magnetometer speed to be specified for Puck.js
            Fix out of memory when appending a string to itself
            Allow members of the same name as function arguments to be added to a function (fix #913)
            Fix STM32F4 RTC stopping if reset during first 1 sec of boot, also fix Espruino WiFi board clock startup
            Fix issue where native functions couldn't be replaced by non-native fns (fix #879)
            If statements now return values (fix #909)
            Fix >8 bit SPI when sending single elements with SPI.send (fix #897)
            Sockets now fire 'end' events (fix #886)
            Added Graphics.draw/fillCircle (fix #920)

     1v86 : Compile Telnet server into linux by default, Add '--telnet' command-line option to enable it
            Fix lock 'leak' in Telnet when Telnet is turned off
            Add Telnet serial device to allow redirection
            Create errors for unterminated expressions (fix #814)
            Remove Espruino's built-in strcpy/etc
            Remove Espruino's built-in maths
            Add basic Taylor series sin and atan for when we're trying to save memory
            Refactoring to use global var for lexer - save some memory and increase parse speed
            Add .removeListener (fix #30)
            Added better micro:bit `show()` that works well with Graphics
            Add `require("Flash").getFree()` as multiplatform way to find free flash pages (fix #815)
            Add the ability to set clock frequencies on STM32F4 chips (like Pico) with E.setClock (fix #52)
            `jsvEvaluate` now uses memory area for execution of JS strings (fix #817)
            Add `E.setBootCode` to allow JS scripts to be run without being in RAM (fix #740)
            'Expecting a number or something iterable, got X' changed to exception rather than warning (gives stack trace)
            Drop '.init' and '.fini' symbols, allowing GCC 5.x compilation on STM32
            Ensure that pinMode/digitalWrite is re-constituted properly by dump() and save() (fix #833)
            ESP8266: add stack dump on fatal exception, ./targets/esp8266/printstack can extract a backtrace
            ESP8266: move JswSymPtr and JswSymList to flash to free up gobs of RAM, bump jsvars to 1600
            Fix write to flash when BLE connected on nRF51/2
            Fix potential variable corruption issue when copying objects/arrays containing packed ints
            Fix ESP8266 printLog memory leak (fix #852)
            When parsing from a Native String (E.memoryArea), use Native String for function code too.
            Added built-in Promise implementation
            Fix broken Object.keys/getOwnPropertyNames caused by ESP8266 RAM saving tweaks
            Add Object.g/setPrototypeOf (fix #856)
            Fix memory leak when executing bound function with 'this'
            Fix missing PBKDF2 & AES libs on Pico + Linux caused by an untested ESP8266 commit
            Fix negative Date to string code (fix #854)
            Convert type warnings to exceptions (to provide stack traces for problems)
            Add uncaughtException event (fix #846)
            Stop eval in a switch statement from confusing parsing (Fix #845)
            Fix regression in 'mode' argument of SPI.setup (allows custom CC3000 pins to work)
            Fix '.on' with long event names
            Enable F4Discovery button pull-down. Newer boards don't seem to have one fitted
            Add 'force' to 'Serial.setConsole' - you can force the console to stay in one place
            Fix micro:bit compass problems (fix #864)
            Ensure that Pico can properly enter deep sleep even if USB is never used
            Only inline the very basic variable iterator functions (save enough space to allow Espruino board build again)
            Don't include Promises on devices where flash memory of Scarce (fix Olimexino compile)
            Fix glitches in PWM output when updating Software PWM quickly (fix #865)
            Added `E.kickWatchdog()` to allow you to keep your JavaScript running - not just the interpreter (fix #859)
            Ensure all pins set to AIN on startup
            Fix regression where setWatch would remove pulldown from button if called after reset()
            Reduce amount of flash available for saved code on Original Espruino (until we can get code size down)

     1v85 : Ensure HttpServerResponse.writeHead actually sends the header right away
             - enables WebSocket Server support from JS
            Fix issue where GC'd objects referencing non-GC'd data wouldn't unreference it
            Add E.memoryArea to allow memory addresses to be treated as variables
            Fix STM32F4 LSI clock frequency - should make the Pico's RTC a lot more accurate (fix #776)
            Added HeatShrink compression to saved code (instead of RLE)
            If saving fails, delete command history and try again.
            Make sure `reset()` resets the sleep and busy indicator pins
            Now escape characters >=127 as well (fix #780)
            Add decodeURIComponent (fix #779)
            Allow reset();save() on one line
            Fix potential issue parsing HTTP headers when more data is sent after the header (fix #783)
            Fix broken storage of floating point values when <255 variables
            Fix regression where DACs didn't work on Original Espruino Board
            Improve tab complete's memopry usage
            Added Tab complete and Debug to low-end Nordic uCs
            Limit the number of events processed each time around the idle loop to the number that were in it at the start
             - helps to fix issues with out of memory when receiving big files over ESP8266 serial connection
            Allow different types of network to have different buffer sizes - enlarge JS, Linux and WIZnet buffers
            Fix bug where clearInterval() and setWatch with debounce could cause setWatch to momentarily stop working
            Make HTTP server only close connection after Content-Length bytes received
            Speed up jsvNewFlatStringOfLength by combining it with updating the free var list
            Update the free var list when garbage collecting (makes allocation at the start of memory more likely)
            Don't zero the contents of memory when freeing - speeds up deallocation
            Removal of un-needed zero initialisations for variables
            Only garbage collect on idle if we're low on memory (fix #767)
            Improve malloc behaviour for crypto lib (try and free all command history is first alloc fails)
            Improve HTTPS error messages
            Add READ_FLASH_UINT8, allowing ESP8266 to read&exec strings stored in Flash with E.memoryArea
            Start the RTC up running off LSI, and switch after a few seconds if the LSE has started correctly
            Allow JSV_GET_AS_CHAR_ARRAY to get a pointer to memory in ArrayBuffers or memoryAreas
            Reset PinStateIsManual in reset (fix #765)

     1v84 : Fix device initialisation flags not working when the device number is above 32 (fix #751, #748)
             - this fixes broken SPI when not on standard pins

     1v83 : Moved to size optimisation for Pico (needed to get HTTPS into 384kB)
            Ensure Modules.addCached doesn't reset parse state (fix #723)
            dump() in Espruino Pico now ignored the pull-down for the button (fix #731)
            Warn when "compiled" functions gets into Espruiono (fix #707)
            Fix lost character on Espruino Startup (fix #704)
            Fix duplicated characters when USB+USART IRQs fire at the same time  (fix #635)
            Fixed Serial.find(...)
            Detect UART framing and parity errors and emit them as events on the Serial object
            Fix [] instanceof Object (fix #737)
            Fix regression in jsvCopyNameOnly (Object.getOwnPropertyNames when names are >8 characters long)
            HTTP requests (and sockets) can now emit 'error' event (fix #706)
            Add optional `ca`,`key`, and `cert` for server public key when using HTTPS or TLS (fix #736)

     1v82 : Fix debugger regression (where quit/reset/etc don't exit properly)
            Fix wakeup when setDeepSleep used at startup (fix #645)
            Add `shiftOut` function (fix #631)
            Store line numbers for functions (via `Esc [ 1234 d` escape code before decl) and use in debug + stack traces
            Allow Ctrl-C to break out of tight loops with function calls in
            Add tab -> autocomplete in Console (fix #677)
            Fix I2C repeated start (#390)
            Fix regression in Math.random() - now back between 0 and 1 (fix #656)
            Fix `var a=0;typeof a -> "undefined"` (fix #683)
            Don't store brackets in functions (fix #204)
            Store functions as 'flat strings' if long enough (fix #467)
            Move most functions out of jsvar.h header file - improves code size on devices where they're not inlined
            Fix parse error for switch statements which meant that `switch (a,b)` caused an error
            Fix error message when `LoopbackA.setConsole()` called
            Move SPI/I2C/Serial initialisers to jsvReadConfigObject, will now error on invalid args (fix #413)
            Fix issue where double-buffered waveforms would use the wrong buffer in the callback
            Fix memory leak in tab autocomplete on objects
            Added AES crypto library (Pico only)
            Fix `typeof (new Uint8Array([1, 2, 3, 4]))`
            Store `function(){return ...}` without the return (fix #700)
            Increased simple string usage from 4 chars up to 8
            Swap order of JsVar internals, string usage up to 10 chars
            Add handling for uint32_t,uint64_t,uint32_t case for Raspberry Pi
            Add startup sanity checks for jsnative.c (in non-release builds)
            Added fix for returning floats on Raspberry Pi
            When <1024 JsVars, `lastChild`'s top bits are stored in `flags`, and pack
               is moved such that we get 1 extra character in StringExts
            Allow events of >12 characters length
            Fix regression in flash memory write (introduced via AES merge)
            Fixed instability when resetting after using SD card on non-standard pins
            HTTPS support on Pico (when compiled in)
            Rename USE_HTTPS to USE_TLS, and enable by default for Pico + Linux
            Add 'tls' module with 'connect' - for TLS Socket connections

     1v81 : Fix regression on UART4/5 (bug #559)
            Fix Serial3 on C10/C11 for F103 boards (fix #409)
            Remove Graphics.setColorHSV, add E.HSBtoRGB (fix #554)
            Make jsiDumpState/jsiAppendHardwareInitialisation use callbacks (fix #398)
            Add `E.dumpStr()` to dump current state of interpreter as a string
            Add ReferenceError, and ensure that TypeError gets converted to a string properly
            Actually create ReferenceError for undefined variables
            Fix Object constructor behaviour (fix #561)
            Now remove intervals/watches if they occur within 0.1s of a Ctrl-C on a blank line
            Fix parsing of trailing commas [,,1,,,]
            Treat vertical tab as whitespace
            Make sure we ReferenceError on '+='/etc
            Allow reserved words in record access and structure definitions
            Add Object.defineProperty/defineProperties (even if they ignore most args)
            Fix value returned when redefining an existing function
            Ensure Pico powers down USB in deep sleep - now down to 20uA!
            Fix Exception throw within catch block (fix #566)
            Fix issue where new Array(3.0) wouldn't produce a 3 element array
            Keep track of modified area in Graphics (so modules with `.flip()` can be speeded up)
            Fix `new Date('December 17, 1995 03:24:00')` - check only first 3 chars of month
            Allow Software PWM via `analogWrite(..., {soft:true})`
            Add `encodeURIComponent`
            Make sure `typeof unknown` doesn't ReferenceError
            Fix isNaN behaviour for 2 element array
            Fix jshPopIOEventOfType when element is at the top of queue anyway
            Produce more reasonable behaviour when converting very long strings to ints/floats
            Added built-in JavaScript debugger! See for details (fix #37)
            Fix crash when using E.getSizeOf() in some cases
            Make sure a TCPIP connection closes even if no data sent
            Make `flash.erasePage` safe if called without arguments (fix #586)
            Add `Pin.getInfo` to see what a Pin can do (for #93)
            Move Pin function code out of jshardware
            Add `E.on('init', ...)` - like `onInit` but allows multiple handlers
            Make sure `dump()` and `E.dumpStr()` dump the contents of Serial as well as events for other objects
            `E.getSizeOf(.., 1)` can now recurse into objects showing the sizes of all their children (fix #579)
            Fix bug when appending to a flat string (fix #614)
            Add `Serial/SPI/I2C.find(pin)` - so we can figure out what device to use based on the pin
            Ensure that when uploading, each command gets checked for errors (rather than right at the end)
            Fix writes on HTTP requests after a timeout, and add chunked encoding if the header is set.
            Added pin info for bit-banded pin addresses (and jshGetPinAddress).

     1v80 : Fix SD card IO that can corrupt SD card on file append since 1v73 (fix #536)
            Fix some potential pointer issues in hashlib
            Make debounced setWatch output state+time information (regression fix #537)
            Shorten some internal property names (faster/less mem is 4 chars or under)
            Change 'internal property' prefix from '>' (fix #540)
            Duplicate properties in an object defn. now cause second to be used (fix #495)
            Make sure `E.unmountSD` doesn't forget custom SD card configs from `E.connectSDCard`
            Added support for USB CK pin (fix #544)
            ES5 parseInt behaviour - don't treat numbers beginning with 0 as octals (fix #538)
            SPI.send now returns Uint8Array when passed an array. Also takes `{data:X, count:Y}` as argument (fix #485)
            Fix `parseFloat(Infinity)` (fix #314)
            Speed up jsvIterateCallback for arraybuffers
            SPI speed improvements, esp for SPI.write (fix #547)
            TV out tidyup, and VGA output can now do line doubling
            Merge in USB HID support for STM32F4 (keeping old USB for the F1)
            Add built-in 'Flash' module to allow Flash memory to be accessed from user code
            Pulled load/save code out of jshardware into jswrap_flash.c
            Remove jsiOneSecondAfterStartup from Linux builds (fix #551)
            Add RLE compression when saving to flash, increase Pico RAM from 3000 to 5000 vars (fix #543)
            Fix `JSON.parse` when not given strings (fix #546)
            Tweak Olimexino board - 700->1k vars, but lowered code flash to 6k
            Disable flash prefetch on Pico (~1% slower, but less power and way more accurate ADC readings) (fix #545)
            Now throw errors when 'in' is used on an invalid datatype (fix #550)
            Updated (inaccurate) docs for Serial.write/print and removed duplicated code
            Changed Pico's device class to 0x02 - now works on older Mac OS 10.6.8
            Change reported USB HID type to 0, from 2 (mouse)
            Improve digitalWrite/etc documentation
            Add `pin.mode` and `pin.getMode` functions (mirroring `pinMode`)
            `Serial.setup` now remembers options if none specified (fix #557)

     1v79 : Fix Mac address parsing for top nibbles
            Make bind reference function internals not copy them. Fix scoped vars in bind (fix #533)
            Use jsvUnlockMany to tidy up code and save some space
            jsiExecuteEventCallback can now take an arbitrary number of arguments
            Allow setTimeout/setInterval to take extra arguments (fix #532)
            Ensure HTTP is closed even when no data handler (fix #535)
            Seed random number from analog input, add W.hwRand and E.srand (fix #534)
            Fix timing bug when setting timeouts from intervals in Deep Sleep
            Reduce timeout for IO (eg. I2C write) on F401 and F4
            Tweaks to keep code size low enough for Olimexino

     1v78 : Fix regression where SPI2/3 weren't working on most pins (fix #525)
            Allow MAC address to be set for WIZnet (fix #527)
            Ensure res.on('close') is called for empty HTTP requests (fix #528)
            Ensure that A9 is never the default pin for USART1 output (fix #526)

     1v77 : Add E.mapInPlace
            Allowed ArrayBuffer Graphics to store pixels MSB-first
            Added faster software SPI path for simple writes
            Make sure filesystem support gets compiled into Espruino Pico
            Fix jsvGetFlatStringPointer to return the correct address
            Fix I2C2/I2C3 on Pico
            Fix issue where garbage collect of a Flat String corrupted the free variable list
            Fix issue where Array.sort on big array with identical elements failed (#515)
            Add 'modules' variable, and set 'this' to 'exports' when parsing a module (fix #520)
            Fix instanceof implementation (and fix mem leak) (fix #523)

     1v76 : Merged in NetworkJS library (for JS networking implementations)
            Ensure that 'wrapped' libraries are killed before timers/watches
            Made 'Field or method doesn't exist' report back the field that doesn't exist
            Added quick and dirty scripts/test262.js runner script
            Fix propogation of Errors and Exceptions through function calls
            Allow parsing of integers > base 16
            Now allow functions with >16 arguments (fix #490)
            Fix assert fail for syntax error in do or while loop
            Maths operations now call Object.valueOf if it's needed
            Fix assert fail when jswrap_object_getOwnPropertyDescriptor called with non-string
            Fix Array.indexOf when array contains non-basic values
            valueOf returns a type error when called on undefined
            Make sure analogRead doesn't overwrite pin state if it was set previously with pinMode
            Make sure pinMode works with ADC input mode
            Tweak event handling - events such as `Serial.on('data'` now set `this` to `Serial`
            Add Function.bind (fix #318)
            Fix SPI.setup memory leak (fix #496)
            Fix assert fail on debug builds on Waveform output (fix #511)
            Added more allowed types of whitespace
            Added String.prototype.trim() (fix #507)
            Allow argument lists in Function() (fix #505)
            Propagate `this` into eval (fix #513)

     1v75 : Fixed issue with Pins/Bools as Array indices
            Fix crash when out of memory while creating built-in object
            Fix continue statement in nested loops (fix #501)
            On Linux, Exit nonzero when an error occurs (fix #499)
            Ensure that pipes 'complete' if the source closes (was previously only the destination)
            Make HTTP/Sockets throttle reads so internal buffers don't get full when piping
            Added http statusCode, statusMessage, and httpVersion

     1v74 : On Espruino Board, allow setTime to use full 64 bits so setTime(Date.parse("...")/1000) works
            Fixed issues with Waveform after 1v72 update to flat strings
            Added 'global' built-in value
            Fix inaccuracy of '' on STM32
            Improve jsvIteratorGetIntegerValue speed for arrays (fix #493)
            Change process.env.EXPORTS to something more useful for compiler
            Fix issue with graphics fill on PCD8544 LCD
            Add TypedArray.slice (from ES6) to help modules that use I2C

     1v73 : Add Uint8ClampedArray, remove code duplication in ArrayBuffer (fix #486)
            Fix regression where accessing certain member names of an undefined variable would cause a crash (fix #488)
            Fix behaviour of char code 16 at beginning of the line (it now doesn't re-add the prompt after processing the line)
            Added jspGetNamedVariable for use in compiled JS
            Fix glitchy time values on the Espruino Board (fix #394)
            Fix getTime()==0 in onInit, which could break timeouts in onInit after a reset (fix #462)
            Refactor Software SPI code into jsspi.c
            Allow filesystem to work on user-defined pins (fix #427)

     1v72 : Stop RTC being reset by hard reset (getTime will now be time since power first applied) (fix #412)
            Allow Function.apply to take typed arrays (fix #442)
            Allow arrays to be passed to digitalPulse so square waves can be created easily
            Force inlining of jsvLock/UnLock on most systems - improves performance a lot
            Fix issues with SPI.write, CS, and out of sync receive bytes
            Fix do..while without trailing semi-colon
            Ensure that &,|,^,etc all have different precedences (without extra recursion)
            Used new semi-recursive parse for expressions
            Fix filled column when fillpoly is off the end of the screen
            Fixed reporting of Serial RX pullup in `dump()`
            Add input thread on Linux, and fix idle and Ctrl+C behaviour (fix #451)
            Stop huge amounts of input events blocking Espruino's timers (fix #452)
            Add ability to use serial ports on Linux with Serial1.setup({path:"/dev/ttyUSB0"})
            Started ability to use SPI from Linux
            Added 'net' library with support for sockets
            Fix JSON parse of negative numbers (fix #456)
            Only keep RTC settings if the relevant oscillator is running (fix #444)
            Finally fixed sporadic compilation problems with '-Os'
            Fixed issues with intervals in onInit (#462)
            Remove libraries from root scope (fix #463)
            Fix pin namings on Nucleo boards
            Fix addition of stdlib's exit on Nucleo debug
            Allow setWatch to execute native functions inside the IRQ
            When dumping typed arrays, use the size if all elements are 0 (fix #448)
            eval() can now access local variables and function arguments (fix #460)
            Added 'flat strings' for typed arrays.
              - these use a continuous chunk of memory so are much faster
            Ensure that we only create as many Serial/I2C/etc items in Symbol table as we need (fix #453)
            Allow modules to return whatever was assigned to exports - not just the original object
            Allowed E.nativeCall (assembler/compiled functions) to execute directly from a flat string
            Working F401 USB VCP bootloader
            Make Press-poweron-release-press boot back into Espruino (this may confuse your OS)
            Assert failures (in non-release builds) now reboot the system on ARM
            Fix issues with freeing of variables not clearing the lock flags (fix #474)
            Make Uint32Array actually return uints (even if they're so big they have to be represented as doubles)
            Allow peek/poke to read and write arrays of values
            Add Boolean constructor (fix #311)
            Fix difference between String() and String(undefined) (fix #312)
            Fix I2C/SPI on F401/F411-based boards (fix #470, fix #473)
            Improved ArrayBuffer write performance
            Massively improved ArrayBuffer Graphics fill performance for bpp<8
            Fix issues with floating point on devices with <1024 vars (using 12 byte JsVar)
            Add ability to change I2C bit rate from I2C.setup
            Added VGA TV output
            Added E.toString (for converting anything into a string)
            Pulled Typed Array creation into its own function
            Added E.toString and E.toUint8Array
            Made I2C.readFrom return a Uint8Array (fix #479)
            Allow multiple byte OneWire reads and writes
            Fix setWatch on F3Discovery (fix #183)
            Ensure that E.getSizeOf() works for ArrayBuffers (fix #484)
            Don't allocate Flat Strings if we can get away with 2 normal string blocks
              - it's actually faster to allocate and uses less memory

     1v71 : Allowed WIZnet + CC3000 to be instantiated on any pins
            Fix break inside loop inside case inside function (fix 428)
            Added fs.stat and (fix #429, fix #430)
            Allow use of DLE (char 16) on an empty line to turn echo off for *just that line*
            Add XON/XOFF flow control on Serial + USB. This is enabled by default for Serial (fix #20)
            Fix irregular timing on Espruino boards with clock crystal (inc rev 1v4)
            Sort out 'Number()' constructor not being picky enough - parseFloat now parses 'Infinity' (Fix #325, mostly fix #322)
            Stop iterator in FOR loop being called once more after a break
            Fix bug allObjects found with iterating over undefined
            Fix ArrayBuffer.sort issue with element size >1
            Fix network de-initialisation on Linux
            Fix reference count issue caused by removing a timer that had already been removed
            Power up SYSCFG on F2/3/4 parts, allowing watch to work on ports other than A
            Wait after setting the RTC time, to allow registers to update (fix #438, fix #441)
            Now using gcc-arm-none-eabi-4_8-2014q3 for compilation - CodeSourcery stopped being supported

     1v70 : Make pipe remove its drain/close listeners. Stops out of memory for repeated piping.
            Fix parseInt for values too large to go in an int (#406)
            Fix integer maths when result is too large for an integer
            Fix mod operator with NaN/Infinity (fix #315)
            Fix signed array values in PACKED_BIT devices
            Drop JsVar size from 20 bytes to 16, increase Espruino variable count accordingly
            Fix Array.fill on sparse arrays (fix #410)
            Allow I2C repeated start (fixes some odd I2C devices, fix #390)
            Refactoring to use iterators wherever possible
            Merge fs_kill and file_kill to ensure that files always die before the filesystem
            Add `E.unmountSD()` to allow SD cards to be removed once they have been used
            Stop String.split("") adding an empty elementy to the array
            Tidy up linker script, allow F401 to use 3x16kB pages for storing program data
            Fix regression in long timeouts (fix #416)
            Use 'interval' var to specify if we're an interval or not (don't use 'recur' var)
            Stop while/for/etc resetting exception state (fix #419)
            Add  E.getSizeOf (fix #421)
            Fix jsvCountJsVarsUsed for names with values
            Make hidden names smaller to save a few JsVars
            If there's only one function scope, don't define an array and save 2 JsVars
            Fix setInterval on non-F1 boards (fix #415)
            Fix issue where large doubles (> +/- 2^31) were converted to -1 rather than truncated ints
            Fix E.getSizeOf (fix #424)
            Fixed JSON indentation issue
            Made 'pretty' JSON output look a bit better

     1v69 : Fix 1v67's regression of digitalPulse when doing lots of pulses
            Add configurable OneWire search command (for finding DS18B20s with alarm set)

     1v68 : Fix memory leak in String.split
            Fix references to `this` - you can now write `this["LED1"]`
            Fix memory leak when calling toString on a normal object
            Fix memory leak in Graphics.createArrayBuffer
            Fix memory leak when joining arrays containing null
            Fix memory leak when syntax error while getting function arguments
            Fix memory leak test when running on Linux
            Fix memory leak in filesystem file open (when failure)
            Fix memory leak on Syntax error
            Stop multiple exceptions from being reported (eg. Syntax Errors)
            Fix parsing of '!!' when not executing
            Improve Error.toString, and fix bug when an exception was thrown from a function
            Improve jsvObjectGetChild when out of memory
            Switch native function decls from 32 bits to 16
            Swap HY2.4 board to software LCD driver as well, work out pin mappings from PY file
            Fix inaccuracy in setInterval, which had started since 32 bit switch in 1v65
            Store JSWAT_EXECUTE_IMMEDIATELY in a way that will fit in 16 bit function decls
            Allow bit-packing of refs for low memory boards (fix #145)
            Now dump 'debounce' for setWatch
            Make sure that dump() outputs correct JS for undefined variables
            Allow pin counts per port of >31 on Linux-based systems
            Fix issue with lost high-speed events when using setWatch with small debounce
            Fix HTTP client regression
            Fix Date constructor issue (uninitialised variable) (fix #408)
            Fix invalid conversion of large ints to floats on ARM
            Fix reset behaviour for non-standard default Serial ports

     1v67 : Lower size of timer task array of devices with little RAM (fix #401)
            Move hidden lists out of the root scope (fix #357)
            Fixed exception catching
            Fix Serial1 initialisation after 'reset()'
            Fix parsing of try..catch when a serious error (not an exception) occurred
            Stop the utility timer queue filling with WAKEUP tasks if Espruino gets woken up early
            Add ability to specify default Serial TX and RX pins in
            Reduce how many digits of floating point values are normally displayed
            Fixed PWM output on B4 + B5
            Fix regression when using pins as array indices
            Remove negation for CHxN outputs - it seems they don't negate after all. Fixes PWM polarity on A7,B1,B13,B14,B15
            Add pullup to USART RX. Reduces wakeups and random characters on Serial1.
            Add error flags and E.getErrorFlags to report possible issues like buffer overflows and low memory (fix #136)
            I2C timeouts now throw exceptions (fix #403)
            Fix String.prototype.split with non-string args
            Add fake digital pins D0..D7 under linux (helps with testing)
            Rewrite ff_wtoupper and save 650 bytes \o/ (fix #368)
            Update Makefile to make it easier to cross-compile RPi->Espruino board
            Fix HYSTM32_32 LCD at the expense of a bit of speed (fix #137, fix #327)

     1v66 : Ensure that analogWrite(pin,1) works on negated outputs
            Allow multiple Waveform playback on one pin (+ wave fixes)
            Improve dump() for objects and Serial.on('data') (part of #397)
            Fix Date.getSeconds,Milliseconds, and documentation on getMonth (#399)
            Fix memory leak on Serial receive
            Fix all Serial receive characters being 0 if no bytesize is specified

     1v65 : SPI.send/I2C.write/Serial.write can now take variable number of arguments (fix #370)
            Don't check for token matches where we already know what it should be (fix #280)
            Improve file read speed for large reads
            Waveform stability improvements
            Fix Float32Array.set (and improve speed for non-float arrays)
            OneWire library now uses hex strings for addresses rather than 64 bit ints
            Fix issue with uninitialised function arguments (fix #391)
            Fix parseURL for numeric keys in query string (fix #388)
            When running JS files under Linux, do two parses to ensure that Functions are 'hoisted'
            Add Object.create()
            Add Function constructor
            Add Object.getOwnPropertyDescriptor (although it won't return spec-compliant values)
            Add some Stubs for inbuilt Date and Error classes
            Added throw and try..catch..finally (see #40)
            Fixed overriding of builtins with other Builtins
            Added Date.valueOf
            Stop warning about break at the end of 'default' in switch statement
            Switch to 32 bit ints (fix #324)
            Added Array.prototype.reverse, and also for ArrayBuffers (fix #389)
            Swap JsVar fields around so everything is aligned on the correct boundaries
            Merge jsvNewWithFlags and jsvNew - making variable allocation a bit faster
            Fix changeInterval regression after int32 changes
            Remove JSV_NAME flag - paving the way for more efficient variable storage
            Store only 32 bit time for events (work out full 64 bits in event loop)
            Increase event buffer size to 128 (from 64)
            Enabled Graphics + CC3k support in the F3Discovery
            Make `Serial.onData` call back with >1 char (#383)
            Move `Serial.onData(...)` to `Serial.on('data',...)`
            Add (fix #383)
            Add HTTP client/server read/available/pipe
            Add documentation for events (and tidy it up for constructors)
            Stop HTTP server closing before all data has been read
            Fixed parsing of multiple shifts
            setWatch now reports the pin back (fix #275)
            Fixed memory leak in g.getPixel with arraybuffers
            Fixed memory leak in "".indexOf(".")
            Fixed ArrayBuffer Graphics where width*height*bpp&7!=0
            Converted parse errors to throw exceptions
            Added Date.parse and Date.toString
            Fix parsing of integers that are too big to fit in an int32 (they're stored as doubles)
            Fix Linux Espruino when no tty is present
            Shave a few bytes off size of jsiDumpState using printf
            url.parse now unescapes the query string (fix #227)

     1v64 : Fix 'a=[2,3,4];delete a[1];'
            Make sure parseInt("0x01",16)==1 and parseInt("0x01")==1 but parseInt("0b01",16)==0
            Fix equality check used in switch, so false !== 0
            Improve Math.pow accuracy for small integer powers (fix #374)
            Make Ctrl-C only interrupt code if it has been running for too long (fix Ctrl-C -> CC3000 restart issues)
            Removed duplication in symbol lookup (fix #372, fix #323, fix #343)
            Fix JSON.stringify with circular references (fix #378)
            Fix String.indexOf when search string is bigger than the string being searched (fix #377)
            Add String.prototype.slice() (fix #376)
            Changed to more compact binary search symbol table (fix #278)
            hasOwnProperty now doesn't check prototypes #24
            Added Object.getOwnPropertyNames (fix #79, fix #158)
            Move 'constructor' into the correct place, be more aware of builtins in prototypes (helps #380)
            Handle __proto__ on builtin object types (eg. [].__proto__) (fix #381)
            Remove indirection of __proto__ (fix #102)
            Properly fix Object.getOwnPropertyNames (fix #380)
            Remove jsvFindChild*Ref (fix #375)
            Added LoopbackA/LoopbackB serial ports (fix #61)
            Fix slowdown when lexing long strings
            Remove Lock/UnLock in jslGetNextCh - should speed it up
            fs.appendFile() now works even if the file doesn't exist (fix #385)
            Support unicode escape sequence (\uXXXX) but crop to 8 bits (fix #386)
            Stop setInterval/etc increasing index numbers (fix #382)
            Clear existing digitalWrites on reset() (fix #231)
            Stop setWatch getting invalid data on load/save/reset (fix #254)

     1v63 : Memory leak when defining functions (fix #359)
            Fix Instance properties overwrite prototype (fix #360)
            Fix `edit(functionName)` without quotes (fix #356)
            Fix 'Uint32Array is not unsigned' (fix #330)
            Ensure Object.keys([9,,undefined,9])==[0,2,3] (partial #349)
            Store array length in the array root node rather than the last element (fix #351 #361)
            Object.keys on array now returns strings (fix #348)
            Remove jsvArrayGetLast (fix #363)
            Fix issue parsing `function() { return }`
            Stop jspNewObject creating a new object name if one already exists
            startup_stm32f10x_hd.s now explicitly sets the stack pointer. Allows Espruino images to use more RAM
            Add BusFault hander, to allow peek and poke to unmapped addresses without HardFaulting the ARM
            Fix edit(...) so that functions themselves (not just the variable) are updated (fix #366)
            Crop lines in errors when > 60 chars (fix #364)
            Improve when stack traces happen for error reporting
            Better error messages, and more efficient handler
            Improving Util Timer rescheduling to try and avoid 64 bit divisions
            Fix a lot of WIZnet W5500 issues (thanks @mgg1010!)
            Add E.reverseByte
            Add HIGH and LOW (fix #371)
            Improve docs for SPI/I2C/Serial.setup
            Force reconnect on CC3000 disconnect (fix #373)
            Added cephdon's streaming file API (fix #12)
            More WIZnet W5500 stability fixes - try and ensure that HTTP server never goes down
            Fix HTTP client Host header when accessing ports!=80

     1v62 : Added ArrayBufferView functions as per ES6 spec (fix #310)
            Added Graphics.setRotation (fix #321)
            Added Graphics.drawImage (fix #198)
            Added E.toArrayBuffer for fast string->array conversion
            Accessing an undefined array/object element now doesn't create it (fix #63)
            Fix fs.unlink returns true if the file does not exist (fix #331)
            Try and improve timer overlays by reordering the alternate function list
            Ensure that PWM output doesn't enable negated/non-negated outputs when it doesn't have to
            Improve console performance when sending long strings
            Initialise Graphics flags Graphics.createCallback - could have caused all kinds of issues
            Now make setInterval > 5s less accurate when setDeepSleep is on (saves ~0.5 sec of non-sleep time)
            Fixed problem when accessing an array with a string in a variable
            Fix issues with `"0" in {0:1}` (and hasOwnProperty)
            Improved interpolate function, and moved it out of ArrayBufferView into E
            Fix Problem with Object.keys on a string (fix #347)
            Fix assert fail when deleting a property that doesn't exist (fix #344)
            Ensure that dump remembers function names if they were in the root scope (fix #338)
            Fix memory leak in fs.readdir
            Ensure that abbreviations in console's '=...' output appear on newline if needed
            Add String.replace (fix #334)
            Make Graphics.drawImage draw bottom line of pixels (fix #329)
            Add Array.shift/unshift (fix #342)
            Fix Defining function after return causes error (fix #326)
            Fix deleting the last element in array (fix #346)
            More helpful I2C error messages (fix #10)
            Fix overriding built-in functions (fix #202)
            Add ES6 Array.prototype.fill (fix #317)
            Modified jsiQueueObjectCallbacks (and Object.emit) to support >2 args
            Added support for SPI LSB-first
            WIZnet improvements (specifically on HTTP server)
            Added WLAN.setIP for CC3000
            Fix String.split issue with last element (fix #352)
            Remove order warning for SPI if no order given (fix #353)
            process.env will now contain the git commit
            Move setInterval/Timeout implementations into jswrap_interactive (makes more sense)
            Add setWatch warning if it's not possible (fix #337)

     1v61 : Fix toString crash for large numbers
            Support floating-point literals without a leading 0 - eg '.5' (fix #296)
            Fix array access with booleans (fix #290)
            Fix "==" issues where only one argument is an array (fix #283)
            Make Array.join ignore null values (fix #289)
            Callback graphics now works even without a fillRect implementation (fix #295)
            ArrayBuffer Graphics now supports 2 and 4 bits as well as 1,8,16,24,32 (fix #301)
            Allowed array.splice to as many arguments as needed
            Make Array.sort() use string compare by default (fix #291, fix #292)
            Allow [,] and [1,2,,4] - (fix #287)
            Stop JSON.stringify using 'undefined' (fix #286)
   can now have more than 4 arguments
            Rewrite native function caller (fix #277)
            Fix conversion of floats to booleans (fix #307)
            Fix parseInt of NaN/Infinity (fix #309)
            Add extra escape codes in strings (fix #304)
            Ensure String.charAt returns empty string for out of range (fix #305)
            Make REPL faster when receiving large amounts of data (fix #303)
            Improved jspeFunctionCall speed, added Named functions (fix #77)
            Allow to be applied to Strings and ArrayBuffers (for #310)
            Tweaks to make more Array functions work on non-arrays
            Added Array.reduce
            Allow commas in expressions at end of for loop - `for (;;i++,j++)`
            Fix SPI send with a single number

     1v60 : Fix unary plug on variable not working (fix #268)
            Added DNS with eth.setIP() for W5500
            Fix lock 'leak' when creating Graphics with callbacks
            Small fixes for trigger/timer
            Make dump() + console aware of built-in SPI/I2C/etc
            Add Pin constructor for converting numbers into a pin object
            Added getPinMode
            Fixed I2C saving state (fix #270)
            Add JTAG to ignore list for some boards
            Fix LCD FSMC formatting and report if LCD is unknown
            You can now reference built-in functions. eg. [1,2,3].map(Math.sqrt)
            Add Object.valueOf - help with #187
            Add Object.hasOwnProperty (although it does have some false positives) - #24
            Add software SPI - fix #41
            Fix issue when constructing an ArrayBuffer with a floating point length
            Fix Math.round regression and add checks to ensure it can't happen again
            Fix DEVICE_IS_XXX defines (fix SW SPI regression)
            Fix hardware SPI regression (getting out of sync after ArrayBuffer write)
            Removed non-standard Integer.valueOf - use "A".charCodeAt(0)
            Fix non-standard ArrayBuffer behaviour when constructing an ArrayBuffer from an ArrayBufferView
            Fix `1 in [2,3,4]` behaviour - it searches keys, not values
            Make parseInt(..., >36) return NaN
            Make Number.toString() use lowercase chars for hex
            Fix issues with NaN, negative zero, and Math.round
            Fix equality checks with null
            Fix comparison of integers with empty string/whitespace+number
            Added nativeCall, which allows C/Assembler to be called from JavaScript
            Fix custom font memory leak

     1v59 : (function(){})?1:0 should == 1 (fix #261)
            Fix Math.pow (Fix #260)
            Fix String.split() (Fix #259)
            Added Array.concat (Fix #262)
            Increase RTC/getTime reliability by ensuring overflow can't happen
            Added Math.min/max
            Allow jswrapper to wrap objects with a name >8 characters long (fix #264)
            dump() now doesn't print 'var X = undefined;' - just 'var X;'

     1v58 : Fix Serial.parity
            Fix glitches in jshGetSystemTime
            Added Graphics.setFontCustom for custom fonts
            Added String.lastIndexOf, and made String.indexOf with fromIndex work
            Used non-bold vector font, improve alignment, and make curves lower quality
            I2C can now write any size (as long as it fits on the stack!)
            Try and enlarge fillRects caused by polygons
            Fix === issues, fix #257
            Add Graphics.getColor/getBgColor for Juergen
            Added E.convolve for doing fast calculations with Waveforms
            Allow String.fromCharCode with multiple arguments
            Add builtin_modules to board's JSON
            Added E.FFT for Fast Fourier Transforms
            Added 16 bit read/write to Waveform (and speed up utility timer)
            Fix utility timer - now interrupts just in time

     1v57 : Tweak IRQ priorities to try and make SPI RX more reliable
            Make http default to port 80 if no port is specified in options
            Try and stop issue with System Time suddenly jumping forwards
            Fix assert fail when clearing and adding timeouts from within a timeout
            Fix modulo (actually remainder) operator for floating point values :/

     1v56 : Added atob and btoa (for base64 encode/decode) - fix #244
            Added Array.sort() - fix #220
            fs.writeFile/appendFile now return false if they fail for some reason
            Move Graphics init and idle functions out of jsinterface.c
            Add HttpServer.close
            Ensure that Linux command-line tests keep running if there's something to do
            Epic networking refactor - it should now be possible to support multiple network devices in a single binary
            Now only remove the interval/timeout/watch that's causing the error - not every one
            Change names of functions in callback-based Graphics so they don't conflict with the real ones
            More CC300 reliability - now range check the return value from send+recv, because if there's a timeout it can be wrong
            Fix memory leak in setWatch with debounce
            Fix 'repeat:false' in debounced setWatch
            Make sure 'repeat:false' disables the hardware watch
            Initialise RTC roughly 1 sec after reset, and use external 32kHz oscillator if it exists
            Added E.enableWatchdog (fix #252)
            Fix negative start value for String.substr()
            Fix problem where the RTC's full 32 bits weren't combined properly

     1v55 : Add String.toUpperCase/LowerCase
            Fix E.getAnalogVRef() regression
            Add Math.tan()
            Ensure Double/Integer have Number as a prototype (fixes: Number.prototype.n=function();(5.0).n() )
            ||/&& now doesn't use booleans (fix #251)
            More resilient parseInt behaviour
            Allow data listener for HTTP POST (fix #226)
            Stop JSON.parse using eval (fix #249, fix #208)
            `.toString` is now called when a String is needed from an Object (fix #57)
            Fixed reference count error when looking for functions in an Object's prototype
            Fix issues with Numbers as Strings in maths (eg. '-5'|0)
            Make sure NaN|0 == 0 (and not some huge number)
            Ensure that [1.23]*1.0 == 1.23 (fix #91)
            Don't pull in cos (use sin(x+PI/2))
            Try and save flash memory on Olimexino board

     1v54 : Add 4x6 font (instead of 8x8)
            Fix occasional instability with Waveform read/write
            Refactor JSON to improve speed and code size (using cbprintf)
            Now print special 'short' JSON for console.log (and the REPL) (fix #47)
            JSON.stringify now doesn't print functions (fix #207)
            Refectoring jsparse.c to name functions after their JS Grammar names
            IF statement now accepts commas
            Ensure that undefined+0 == NaN (only worked for floats previously)
            Fix assert fail (issue unlocking when executing built-in functions)
            Fix setInterval regression in dump (and tidy up code)
            FS lib now resets when issuing the reset() command (fix #200)

     1v53 : Attempt to deal with the case where CC3000 crashes on initialization
            Fix regression with setInterval/timeout and saving
            Fix issue with saving Serial baud rates
            Added ArrayBuffer.set
            Use jswrapper.c for executing idle/init/kill events for libraries (cleans up jsinteractive.c)
            Added beta 'Waveform' API to allow simple audio output
            Improved non-deep-sleep power draw by allowing Espruino to wake itself on the Utility timer (rather than SysTick)
            Allowed Waveform API to output on both DAC and PWM
            Improve auto-generated documentation
            Speed up ArrayBuffer.set and allow Strings to be used properly
            Fix jsvArrayJoin if memory runs out
            Added E.sum and E.variance array operations
            Added Waveform Analog Input

     1v52 : Fix memory leak in Array.slice
            Fix broken Serial initialisation (partial fix for #241)
            Add fs.unlink (for deleting files)
            Fix url parsing when there are two slashes
            Fix recent changeInterval regression
            Making CC3000 recover properly in the case of repeated HTTP GET
            Add alternate function remapping for Serial and improve Serial.setup error reporting, fix #241
            Added preliminary WIZnet W5500 support (see
            Alt Enter (27 + 10) now always inserts a newline: (eg. for `if (X) \n Y`)
            Fix digitalPulse with not a number
            Make digitalPulse(... 0) wait until the last pulse is complete
            Stop Espruino sending out so many carriage return characters (fix #243)
            Added 'delete' keyword (fix #39)

     1v51 : Added debounce to setWatch (fix #14)
            Tidy up timeout/watch code and now store an integer for interval
            Fix crash in url.parse (string free)
            Fix Modules.addCached bug which means that Modules.removeAllModules created a memory leak
            Fix regression introducted by fix for #199
            Added 'Esc,[,2,K' escape sequence for clearing lines. Much safer than Ctrl+C which tends to break out of execution.
            Fix bootloader (broken by LTO in 1v49)
            Added Number.toFixed
            Make number.toString(base) work for floating point (fix #232)
            Fix Linux jshSleep so that timeouts are handled at <10ms if required (fixes test056)
            Now use jshardware's SPI for SD filesystems - more multiplatform
            Now ref thisVar, which stops it being repurposed into a Name for array accesses (fix #233)
            Fix Linux halting when there is one long timeout but no other activity
            fs.readFile returns 'undefined' if file is not found. Also make readdir return undefined on failure (fix #229)
            Remove disk_timerproc in SD card implementation
            Upgrade fatfs to R0.10a
            Tweak jsinteractive.c to help reduce code size
            Finally added Long filename support for FatFS (fix #78)
            Epic refactor to remove JsParse (fix #17)
            Implement faster Graphics ArrayBuffer fill (affects vector fonts + clear)
            Stop repeated analogWrite with messing up PWM waveform (fix #56)
            Swap open and close brackets in bitmap font (fix #191)
            Graphics arraybuffer/callback now accepts 16bpp
            Added ability to specify a JS function for Graphics fillRect
            Graphics setPixel(x,y,undefined) to use foreground colour (fix #215)
            Make sure that interruptions are handled better while drawing to graphics
            Make sure that stack overflow errors are handled more tidily (and increase limit for warning)
            Increase available stack on Espruino Board
            Stop FatFS using insane amounts of RAM
            High res timer (now to 1/2^23) using SysTick with RTC as a base (fix #168)
            Added 'Infinity' constant
            Fixed type equality check between int and float (should treat them as the same)
            Fix parsing of '018' - it's not Octal after all (but 017 is)
            More accurate values for PI and E
            Fix charCodeAt being signed (should be unsigned)
            When casting Strings to booleans, so s.length!=0
            Guess initial values for average SysTick time - means that getTime is more accurate for the first 1-2 seconds after startup
            setWatch now reports lastTime - time of last state change #238
            analogWrite now respects pinMode (fix #234)
            Add Open Drain support to pinMode (fix #225)
            Fix calling Number([value]) always returns undefined (fix #186)
            When disconnected from the net, make sure we free all HTTP clients/servers
            Completely remove IRQs from CC3k code
            Speed up CC3k code, try and make it automatically power cycle it on timeouts
            Fix SPI MISO on F4 board
            Move CC3000 to SPI3 (same pins) so SPI1 can be used for other things
            Compile CC3000 support in for the F4 (untested)
            Process.env now reports board serial # and current console device (se we can throttle for Bluetooth) (fix #219)
            General bugfixing for low memory situations
            Make string free non-recursive
            Fix issue where fs.readFile of a big file would cause Espruino to crash
            Fix memory test harness

     1v50 : Fix broken Web IDE caused by change to printing JSON for console.log (part of #206)
            Fix bug when trying to stringify {5:5}
            Allow {1:2} to be parsed (fix #199)
            Added SPI RX IRQ. Caved in and used a few bytes for buffers, made SPI significantly more reliable

     1v49 : Change compiler flags to allow link-time optimisation
            Increase buffer sizes on Linux
            Increase buffer sizes on boards with >= 20kB RAM
            Made Startup banner smaller
            Less printing when loading from flash
            Don't display startup banner if loading from flash (an easy way to fix #213)
            Fix HTTP response code of 0 (fix #212)
            Add timeouts to TI's CC3000 driver
            Add timeouts for SPI, and other timeouts now interrupt execution
            Lower USB interrupt priority, remove pesky PriorityGroupConfig that was breaking other IRQ priorities
            Until we sort out SPI RX and IRQs, lower default SPI baud rate to stop timeouts
            console.log and print output JSON now (part of #206)
            Added handling of query in url.parse - still not fully compatible though (fix #205)

     1v48 : Fix issue where the size of command history is being reported wrong and so process.memory().free is reported wrong too
            We now loop without a seek to position inside the string (much faster if loop is not near the start of a fn) (fix #53)
            Faster string iteration which doesn't involve incrementing it->index
            Swapped to jumptable to lexer (should be a bit faster)
            Added the 'E' class, with getAnalogVRef and getTemperature (fix #60)
            Deprecated Math.clip (not in spec) and introduced E.clip
            Fixed bug in that meant that ifndefs in JSON were sometimes not obeyed (better mem usage on small chips)
            Fix deep sleep breaking ADCs

     1v47 : Fix issue with dump() and input_pullup not being quoted
            Fix regression that broke OneWire in Espruino Board (#197)
            Fix clock speed issue on SPI1 (
            Don't interrupt on USB ESOF or ERR  - allows 'normal' sleep without interrupting every 1ms (fix #195)
            Remove pointless KickStarter line printed on startup
            Added bootloader hack to Python bootloader

     1v46 : Fix parseFloat("") not returning NaN, and parseFloat(" \t 5 £$%^&(*$") returning NaN
            Added isNaN() function (fix #184)
            Fix parse order for 'typeof' (fix #172)
            Added Number object (fix #165)
            Bounded ftoa (stops crash when printing Number.MAX_VALUE) - helps with #185
            Added Array.isArray() (fix #160)
            Add do...while (fix #151)
            Stop Espruino board from crashing if you try to create a web server without a connected CC3k (fix #182)
            Remove Array.contains as it's not in the spec (use indexOf instead if you need it) (fix #161)
            Fix nasty bug where adding/removing intervals/timeouts while in one could cause issues
            Fix bug when printing 1.999999999 and similar (fix #190)
            Remove need for pow for exponentiation. Not great but it fixes some tests that failed on FP inaccuracies
            Change polarity of setSleepIndicator (fix #194)
            Allow array.push with multiple arguments (fix #189)
            Speed up array access by searching from the end backwards if we think the number is in the last half (fix #46)

     1v45 : Fix parseFloat("foo") not returning NaN (and assert) - fix #149
            Remove Integer.parseInt
            Fix parseInt("bar") - fix #150
            Ensure that maths ops with null do treat it as 0 rather than a string - fix #156
            Fix digitalPulse length (properly!) - fix #154
            Making sure that undefined gets cast to NaN
            Fix Array.indexOf() returns undefined instead of -1 - fix #155
            Moved memory() to process.memory() - added more info too
            Try and improve handling of PWM timer speeds
            Fixed varying SPI baud rates depending on device
            Makefile changes for OSX compile

     1v44 : Modified build system to store binary names in the python definition
            Fix nasty regression involving losing code at the end of Strings
            Fix segfault when pinMode is called on an invalid pin
            Now disable interrupts during 4 bit SPI send - it's just too much otherwise
            Detect unfinished block comments in console (fix #138)
            Fix flash write on most 10XxB boards
            Fix PWM output on all STM32 boards
            General hardware tidy in prep for more intelligent device management
            Run initialisation code before setWatch, to make sure pullup/down is set beforehand
            Change 'Pin' datatype to be an unsigned char - makes tests easier
            Now use the hardware RTC for keeping system time. Allows proper deep sleep on Espruino board
            FINALLY - fix the USB VCP lost characters issue (#94)

     1v43 : Added 'Modules' object with support for adding/removing cached modules
            Allow product ID to be changed via Makefile
            Fix documentation (and old-fashined Parsing style) for JSON
            build_jswrapper now outputs errors to stderr (more compatible with default (silent) build process)
            Fix issue when parsing quotes in strings
            Added void operator for closure minification compatibility
            Ensure that return takes the comma operator
            Fix issue where printing Infinity would crash Espruino (fix #129)
            Finally some working (extremely beta) cc3000 code
            Added jsvObjectGet/SetChild to simplify some wrappers
            'http' now uses JsVars for storage (so is suitable for non-linux devices)
            Turned 'http' into a library
            Added process.version and process.env (fix #131)
            Changed handling of 2nd arg of << so that precedence is correct
            Fixed handling of 'for (;;)'
            Fix lock leak in Module handling
            Update ST's library for the STM32F1
            Update ST's VCP implementation
            Added prefix operator (fix #130)
            Allow espruino for linux to be run with '#!' in scripts
            Fix indexOf on final element of strings (fix #133)
            Remove JSV_PARENTINFO, as it turns out JS doesn't keep track of function scopes anyway (fix #109)
            Make 'this' a keyword (now faster, more memory efficient)
            Make 'Hardware' (root) the default value of 'this'
            Add jsvArrayPushAndUnLock and modified code to use it (fix #135)
            Now remember I2C state (partial fix for #13)
            Replace 'pow' function with a smaller version - save ~2kb
            Shaved another 1200 bytes off jslTokenAsString
            Now store Pin state (fix for #13 on F1 parts, F4 still looks broken)
            Added Graphics.stringWidth
            Added internal Printf function
	           Misc speed and code size improvements
            This version has gone to Seeed for use on the KickStarter boards

     1v42 : [ebirger] allowing 'new' with no brackets
            Allow built-in functions with variable numbers of arguments (fix #83)
            Implement 'String' constructor in the normal way (fix #110)
            Fix regression with parsing constructors while not executing
            Allow multiple arguments to print and console.log (fix #92)
            Make 'arguments' array available in functions (fix #100)
            Fix an assert fail, and handle some potential memory leaks
            Don't show __proto__ and constructor with, keys(), or JSON.stringify
            Make 'trace()' output more readable debug data for complex structures
            Fix memory leak whe parsing functions iwht variable numbers of arguments - fix #115
            Defined NaN
            Stop 'new undefined()' crashing Espruino - fix #120
            Get A13/A14 working on Espruino board (these were JTAG)
            Get bootloader size direct from Python (remove hard-coding)
	           Fix '~' operator when acting on variables
            Made bootloader a bit more error tolerate (CRC on write)
            Added %=, /=, and *= operators (fix #121)
            Allowed Object.toString() to take a radix argument for integers (fix #125)
            Fix error message issue - broken strncat (fix #124)
            Add comma operator (fix #122)
            Added some basic code for STM32F429IDISCOVERY - not currently working though
            This version is the one sent off on the Test Harness (so will probably appear on boards)

     1v41 : Fix Olimexino compile (
            [ebirger] Member constructors (eg. new a.b() )
            [ebirger] Ensuring integers with radix specifiers can still be parsed if a radix is specified
            Fix for tests/test_json_arraybuffer_001.js - iteration of arraybuffers of length==1
            Add Object.keys(...)
            More arraybuffer iteration fixes
            On linux, use built-in stringToFloat to aid debugging. Handle exponentials, fix #31
            'make serialflash' is now works correctly for Espruino Boards with bootloader
            setWatch(..A0);setWatch(..A0);clearWatch(1) does not now kill the other watch, fix #25
            One-based setTimeout/setWatch, fix #3
            Added and Function.apply, fix #54
            'http' and 'fs' are now libraries that need to be 'require'd, fix #8
            Updated pin info for STM32F103xC/D/E chips, fix #84
            Fixed linker script for STM32F4 (discovery board now works)
            Object prototypes are now Objects, fix #101
            Board docs now specify '3.3v' only pins fix #104
            Add Array.forEach
            Fix searching down >1 prototype to find functions (one more issue posted in #99)
            Fix "12345"/5 type issues (fix #90)
            'Consting' some string functions
            Fixing arrays with string indices that are actually numbers \o/ (fix #19)
            Released onto website

     1v40 : Ensure that LCD.prototype.setPixel = function actually works
            Refactor LCD driver code to allow lcdInit (and start of making it non-platform-specific)
            Built 'LCD' support into linux/raspi/carambola
            Add initial SPI.send(ArrayBuffer) support - even if NO VALUES RETURNED
            Start of built-in Nokia 5110 LCD support
            Remove GPIO clock removal on sleep for now (it kills setWatch)
            Fix (sub)ArrayBuffer problems (test100.js)
            Added setDeepSleep - still beta put power consumption drops to 1mA
            Fix broken name for httpCRq.write
            Changed LCD to Graphics - added ability to render to ArrayBuffer
            Fix 8 char built-in class names
            Adding preliminary Sony SmartWatch support
            Adding preliminary support for completely bare 36 pin chip
            Fixing pin defs for Espruino board rev 1v1
            Added proper SDL/ArrayBuffer and JS Callback graphics support
            Added "ifdef" ability in build_jswrapper
            Take JSVAR_CACHE_SIZE out of jsutils and put it in the board config file
            Added JSV_PARENTINFO which will allow us to do things like setTimeout(,10)
            Fixed arrays in non-executes streams - 'if (0) print([1,2,3]);'
            Added 'require' function loading modules from node_modules on SD card
            Added module cache to stop modules being re-loaded
            Renamed internal vars to start with '>' - much easier to distinguish for 'dump'/etc
            Only use parentInfo on functions
            Load all tests in test dir - don't do them by number
            Added 'zigzag' ordering for ArrayBuffer Graphics
            Added 'vertical_byte' ordering for ArrayBuffer Graphics
            toJSON now ignores 'hidden' object elements
            Special-case jsvArrayBufferIteratorSetIntegerValue
            Make SPI output an ArrayBuffer
            Use best out of 3 for DelayMicroseconds calibration - something seems flaky right after bootup
	           Lines now drawn from p1 to p2 inclusive
	           Events now use jshPushIOWatchEvent (should cut down on code) also fixed bug with watching pin #11
	           Now remember if pinMode was set or not
       	    Transform ```code``` in JSON into a code tag in the documentation
            Graphics now supports FSMC for HY boards again
            Drawing vector fonts is now roughly the right size and position (still not 100%)
            Remove registration code
            Adding MPL licence
            Remove Arduino bit manipulation functions - nobody seems to use them anyway
            # of flash pages/etc now comes from board info
            [ebirger] Supply the correct arguments to
            [ebirger] Method calls and membership evaluation should be done on all factors (ee. [1,2,3].foo())
            [ebirger] When running multiple tests, only set up terminal once or it breaks the terminal window on exit
            Added STM32-style USB CDC bootloader for Espruino Boards
            Added scripts/ to package up bootloader and espruino into one binary
            SHIPPED on Impatient developer boards

     1v39 : Added Bitwise NOT operator
            Added Raspberry Pi version to ZIP (with HTTP support)
            Fixed load/save on Linux Devices
            Added pinMode function (to allow pull-ups/pull-downs to be turned on)
            SPI.send4bit/send8bit will now not mess up the final element
            changeInterval now clears up stored up callbacks (eg, setInterval(.., 0.01)...wait...changeInterval(...,20)
            Ctrl-C no longer prints anything, which avoids lockups
            No longer print "Execution Interrupted" if nothing was interrupted!
            Added >>>= >>= and <<=
            When entering text interactively, ensure that there are no trailing spaces

     1v38 : Tweaks for Arduino IDE compile
            Removed '(char #)' from stack trace, as a bit pointless now
            Added better reporting of execution location when Ctrl-C pressed
            Urgent fix for non-working Olimexino since 1v33
            Fix string comparison when strings contain "\0"
            Added LED1/2/OSC/SD/etc to Olimexino Board docs

     1v37 : Urgent fix - power saving code made it difficult to re-flash Espruino (now only apply this to Espruino Board)

     1v36 : Fix documentation for Array.pop()
            Added some much better board documentation
            Fixed DAC output on F3
            Fixed DAC output on devices where PWM is also available and the alternate function is less than the DAC's

     1v35 : Attempt to reduce power consumption when sleeping by turning off GPIO, and setting GPIOs to AIN on reset
            Fix F3 issue where ADC/DAC weren't picked up properly
            Tidy up register text and add KickStarter mention
            var a = {}; a[LED1]=0; - not converted to String
            JSON (and hence dump()) now dumps ArrayBuffer correctly

     1v34 : Faster jshFromDeviceString
            Preliminary support for flow control on Serial receive
            Speed improvements by removing jsvGetRef from jsvUnLock
            fast 4 byte pre-check in jsvFindChildFromString
            Skip lock/unlock in FindChildFromString to help increase speed
            When we unplug USB, only go to the default console device IF that is the device we're currently on
            Support for custom Espruino board
            Added ArrayBufferView.interpolate
            16 bit SPI send for send4bit/sevrnd8bit (better reliability on low-end chips)
            Fix JSON dump of typed array
            Added Math.clip(x, min, max)
            When saving on flash, don't do jslTokenAsString properly
            B3/B4 move from alternate fn
            Fix incorrect reporting of analog pins
            Fix I2C.readFrom on STM32F1/4
            Make 1/2 == 0.5 (was being sensible before, but now follow JS spec)
            Ctrl-C while in timer fn clears timers (but not outside it)
            Fixed broken clearInterval from within setInterval
            Hopefully fixed issue on SSD1289 LCD controller
            Trigger wheel handler to use interrupts
            2D arraybuffer interpolation
            Added Math.wrap, fixed a lot of trigger issues
            Fixed SysTick priority/preempt problems
            Slowed the SysTick timer back down for everything
            Fix Int8Array signedness on F4 boards
            Refactored source code tree

     1v33 : fix character encoding issue of "\16"+"1" != "\161"
            Refactoring of ArrayBuffer into iterator, and addition of a general purpose iterator
            Fancier assert for debugging
            jsvArrayJoin to use new iterator
            for (i in ...) to use new iterator
            I2C and SPI use new iterator
            Serial.write() - to allow single ints to easily be written
            changeInterval assert fail when given a function by accident
            added peek8/poke8/peek16/poke16
            memory() now takes account of command history size
            memory() on ARM reports the end address of the stack - so it can be used as a scratchpad with peek and poke
            Try and reduce code size by not inlining several functions
            No refs for StringExts - so we get one more byte per JsVar (~5%) more storage efficiency
            Move from jsvIsBuiltInFunction to computer-generated jswIsBuiltInFunction
            When creating Objects, check for built-in function BEFORE creating an Object class for it
            Built process now checks that flash usage is under the allowed value
            Added short compare to jswHandleFunctionCall to reduce code size
            Added 3 byte compare (4 byte read and AND off top byte) - faster, less code
            Auto-generate jsvGetBasicObjectName from docs
            No longer using refs for storing whether free or not - use flags with JSV_UNUSED and get one extra var with 8 bit refs
            Switch to using STRING_0...STRING_MAX in flags, rather than specific bits in JsVarFlags - allows more that 15 chars to be used per JsVar
            Make ArrayBuffers actually be ArrayBufferViews - saves on extra string-handling code at expense of one var
            Make sure Uint8Array,etc inherits from ArrayBufferView
            Fix issue where a '\0' coming in from serial was not put in properly
            Don't inline some functions when we're trying to save on flash
            Re-use sin for cos, pow for sqrt to reduce code size

     1v32 : Fixed embarassing issue with 0.999=="0.A"
            Added and checked Pin.writeAtTime on STM32
            Now don't allocate events array - just allocate directly, which saves memory and is faster (although slighty out of order)
            Docs: now Alphabetically sorted, and class instances not listed by accident
            Fix issue where Ctrl-C on ANY Serial port caused execution to be interrupted
            Updated busy indicator to cope with recent change to not allocate events in an array
            Fixed I2C on HY 2.4 board - I2C needed hard reset
            Added basic ArrayBuffers/TypedArray support
            Fix memory leak when error created with [] on a non-array/object
            Improved hyperlinking in documentation
            Fix I2C receive bug on F4
            Increased VL board's input buffer size

     1v31 : Fix PWM output on TIMER1/8 pins of the STM32F4
            Fix PWM output for negated timers
            memory() now runs a GC pass
            Fixed multiple occurrence of functions in reference

     1v30 : STM32F1: fixed AF issue meant peripherals would never return from AF mode
            STM32F1: When given an invalid pin, now reports if pins are 'af' or not
            Updated SPI.setup docs to mention that you can't mix AF and non-AF
            If one SPI pin is specified but others aren't, only that pin will be set up
            Added Olimexino hack so SPI1.setup works as expected
            Allow using [] on a function
            Fix precedence issue, so var a = function() { return 1; }(); works
            Update SPI documentation
            for (i in f) can now iterate over functions
            Optional argument to trace() for object to start tracing from
            Small steps towards ArrayBuffers
            Added smart edit that checks for internal functions, and uses Function.replaceWith
            Added Function.replaceWith to replace the internals of a function while keeping the scope

     1v29 : Some hacky sysfs-based IO for running on Linux
            HTTP Callbacks are now stored as names so they can be changed on the fly (Linux only)
            Successful compile for Carambola
            Filesystem support on Linux
            Switch to variable size ref counter (marginally more efficient on very small devices, safe on Linux)
            Linux now has unlimited memory available
            Added linux/sysfs 'setWatch' (non-irq driven, so very noddy)
            Checked jswrapper check from using multi-char constants to a #define
            Improve pin suggestions for SPI/I2C/USART
            Auto-initialise USART with default values when setConsole is used
            Support for new Graphics LCD types
            3.2" VCT6 board support

     1v28 : Faster LCD fillrect for HY 2.8
            Fix for multi-byte SPI writes on HY board at 1Mhz (touchscreen control bug)
            Fix issue with delayMicrosecond calibration on HY (and hence OneWire)
            Fixed digitalPulse on STM32VLDISCOVERY

     1v27 : Fixed problem with OneWire constructor execution
            Added |=, &= and ^=
            Added Array.splice()
            Faster, more ROM-efficient built-in symbol table
            Fix for potential issue when using field accessor on an undefined var

     1v26 : I2C Support on STM32F1 and STM32F4 boards too
            Emergency cut in variables for Olimexino with bootloader (as flash usage has got too high for save to flash!)

     1v25 : http.writeHead to accept an empty header
            Fixed issue finding methods on built in classes (0 termination)
            make sure http server with no data still sends headers...
            Start of MINI-HY-2.8" support (all ok, but no SD card yet)
            Reduce RAM usage by consting some arrays that are not modified
            Vector fonts now use polys - 8kb less ROM, and faster rendering
            Start of LCD 'driver' code
            Standard way of handling events, Object.on/emit/removeAllListeners - like Node.js's EventEmitter
            Self-calibrating Microsecond delay (for intermal OneWire/etc)
            OneWire class
            Correct handling of built-in class constructors
            Fix error when parsing a zero-argument function that has been given arguments
            I2C support - currently ONLY tested on STM32F3 board

     1v24 : SDIO-based fat driver on the HY STM32 board
            Added DAC to the HY boards (103xE-based)
            Re-named the fileSystem functions to make them more compatible with node.js (readFile/writeFile/etc)
            Added fs.appendFile
            Removed HTTP from the reference until it is included in some boards

     1v23 : Fix 'ERROR: INTERNAL: stmADCChannel' on STM32VLDISCOVERY/F1 boards when accessing PA0
            Reference now mentions which Espruino version it is for

     1v22 : Important fix - Events got executed in the wrong order if they got queued up

     1v21 : Ensure SPI clock does not stop between bytes
            Added SPI.send4bit and SPI.send8bit
            Made sure the VL board's code fits into available flash
            Smart += that can append to a string rather than cloning it
            dump() prints functions properly, rather than 'var f = function() {}'
            Pageup/down move the cursor to the beginning/end of input
            LCD draw/fill with negative x and y

     1v20 : Add console.log
            Fix automatic usleep for Linux
            Added node.js-style HTTP server for Linux version
            Fixed null-pointer issue when accessing something that doesn't exist on an object
            Added node.js-style HTTP client for Linux version
            Start of bit bashing functionality
            for (i in "ABCD") console.log(i) -> 0,1,2,3
            String array access (but not for writing - doesn't work in JS anyway)
            String String.fromCharCode / charCodeAt
            Added SPI baud rate setting
            Vector font chars 'a' and '4' now work ok
            Fix numeric exception when rendering a poly that has some identical points
            Better digitalPulse (uses timer + interrupts)
            analogWrite can now take an object with a 'frequency' argument for PWM

     1v19 : Fixed issue where var M=Math;M.random() failed
            Fixed issue with var U=USB;U.print("Hello");
            Remove loop iteration limit
            Fix memory leak when a syntax error is in for '(i in arr)'
            Save state of pin on setWatch interrupt (e.state)
            Change setWatch to allow only on rise or fall as an option
            clearWatch() clears all watches

     1v18 : DAC support on F3/F4
            Serial.setup() can also take a second parameter of an object {tx,rx}
            Better support for dump() with echo/setBusyIndicator/etc
            Better dumping of prototypes on built-in vars
            Don't add chars<32 (Except tab) to the input line
            SPI1/2/3/4.setup() to take an object {baud,sck,miso,mosi}
            Better hardware initialisation code (not UARTS auto-init if they are used)
            Fix issues with prototypes
            Peek/poke instructions
            Start of I2C support (not usable yet)
            Added Math. ceil/floor/exp/log

     1v17 : Support for running alongside the Maple bootloader
            Fix parsing of numbers beginning with 0 when forceRadix!=8
            Fixed USART1 on Maple/Olimexino devices

     1v16 : Inlining of jsvLock/UnLock in jsvar.h to improve speed
            Move non-hardware-dependent stuff into jsdevices
            Move jshardware.c into targets/stm32/jshardware.c, create 'targets/linux' and use a single makefile
            For + While loops work without reallocating lex
            Fix AddNativeFunction when function already exists (and tests + saved state)
            Change jsvFindChildFromX to use JsVar* from JsVarRef - saves a lot of lock/unlock
            Handle new Foo() as per spec (return value + init of this+prototype) - still does not cope with non-object prototype
            Beginning of SD card support (works on Olimexino, but not very flexible)
            Fix for parse/eval when given non-strings
            Strings can now contain '\0'
            Jumptable-friendly reserved word check
            Jumptable-friendly builtin functions (massive refactor)
            SPI support
            HY board support, and graphics LCD
            Added fillPoly, and Vector fonts
            Added Registration code
            Fixed some undefined function/array warnings
            Much better HTML function documentation
            Fixed edit() function
            STM32F3 support, and now peripheral stuff is done with a script
            explain what pins are available if a pin is not capable of requested fn
            power on ADCs only when needed
            LCD fillPoly speed improvements, + drawLine
            Add datatype for Pin, so pins written to console by pin name rather than integer value.
            Added Pin.set/Pin.reset
            Change warning about 'undefined.' into an error (foo.reset() had unexpected consequences!)
            Fix parsing of '1.0/-3'!
            Add typeof and instanceof operators
            Ensure that Serial1/SPI1/etc are objects of type 'Serial'/'SPI' - so prototypes can be added

     1v15 : Escaping JSON strings
            Fix parsing of octal numbers in strings (so don't have to be 3 chars long)
            Drastically improved stack usage using small stub functions (at expense of a bit of speed)
            dump() also dumps out prototypes for functions

     1v14 : Fix complaint about pins during setBusyIndicator()
            Increase available memory on OLIMEXINO
            Added function memory() to return memory usage
            setWatch now links to function names (rather than just functions)
            dump() also handles Serial.onData(...)
            Fix issue with JSON printing functions with arguments to console
            prefix builtin variables with '_'
            fix ArrayIndexOf when array contains undefineds
            move all devices into one git repository
            USB on F4
            call onInit function/string if it exists when Espruino powers on
            Compile F4 with -O2 - as we have the program memory for it
            Serial3/4/5/6 on F4
            Serial3 on Olimexino
            Make Serial.onData() clear onData handler

     1v13 : Operations like + on Object/Array convert them to strings rather than error
            var now doesn't error if there is no semi-colon
            Allow new line or line delete in multi-line editing
            add edit(functionName) - which copies function definition into inputline so it can be updated
            When printing lines, delete current inputline and then put it back in idle loop (only if echo=1)
            Support *,/ etc on numpad

     1v12 : Issue when printing lots of data and then disconnect USB
            Hide USB/Serial in Dump()
            add, thisArg)
            For newline, count [] and () (as well as {}) - also knows about comments/strings/etc
            Fix assert fail is setTimeout with non-function
            If space at end of input line, enter still executes
            Removed some hard-coded arrays in favour of JsVar strings
            Fix confusion with jsvIsName/jsvIsString
            Handle numpad end key
            Add code to check stack and stop stack overflow if too much recursion
            Ensure that setTimeout/setWatch store the link to a function, not the function
            Fix nasty ref loop in ref loop GC issue
            Add dotty output
            Fix memory leak when error in jspParseSingleFunction
            Now run Garbage collection if we're idle, and we know we have a few ms spare
            Added setSleepIndicator
            Fix line/col indicator in errors/warnings
            Fix JSON parsing and printing when 'undefined' encountered
            Rewritten object handling code to be way more standard JavaScript compliant
            Array initialisation with 'new Array()', also for Strings
            Added a few more built in functions
            Nice error reporting with line + pointer
            fixed Math.random
            Binary style ops on doubles now work - they are just converted to ints
            Added boolean datatype

     1v11 : Add Math functions
            Add command history (and dynamic history free if low memory)
            Fix broken jsvArrayPop
            Add tests for and fix Array.indexOf
            In-line editing for commands
            Fix bug in basicVarEquals for big strings
            More fixes for low memory conditions
            Multi-line edit for commands (but no newline or line delete yet)
            Handle Home, End + reverse delete keys
            Fix nested for loops not handling interrupts correctly
            Fix AppendString issue when given start value greater than string
            Add 'changeInterval' to allow things created with setInterval to have the frequency changed (eg. stepper motor control)
            Now puts itself to sleep to save power, when it knows nothing is required and it'll be woken up by SysTick before
            Change Math library to avoid putting constants in RAM

     1v10 : Increase FIFO size for VL
            Marginally decrease amount of F4 vars to ensure they all fit in one flash sector
            Allow strings to be longer than the max token size
            '"key" in obj' syntax
            Detect if in FOR or WHILE loop, and if not, disallow break and continue
            Change min setInterval time to 0.1ms - F4 can get close to this
            Better analog pin error message
            USB support on Olimexino/Maple
            Start of multiple COM port support (ioEvent queue)
            Ctrl-C now clears the input line
            Save state of 'echo' into flash with save()
            Add 'setBusyIndicator(pin)' to set pin high when Espruino is busy
            Inbuilt function handling speed improvements
            Allow Serial comms via other UARTS. Serial1/2.onData and print/println
            now inserts elements into arrays in the correct order (GetLength can be (is) now much faster)
            Faster code to work out pins from strings
            Automatically convert IDs in form A#,A##,B#,B## etc into numbers.
            Built-in constants for LED1/BTN/etc.

     1v09 : Enabled 'abs' by default
            Added flash programming to STM32F4
            analogWrite now working!

     1v08 : Add preliminary STM32F4 support
            Allowed test cases to test timers - eg. code in jsinteractive.c
            Fix memory leak for timer
            Fix memory leak for digitalWrite

     1v07 : Fix string charAt
            Fix watch on different pin
            Pass arguments to event handlers - eg. time
            digitalWrite/Read to take arrays of pins, and int for value

     1v06 : Add break + continue
            Add switch statement
            Handle /r, /r/n or just /n for newlines - phone compatible
            Handle different type of delete

     1v05 : Allow setWatch/setTimeout/setInterval with a string
            Handle adding Open bracket then deleting it
            When calling a NAMED function, zero the scopes - this stops scope table overflow

     1v04 : Renamed to Espruino
            Fixed issue with event add when out of memory
            If out of memory happens during a timer, kill all timers