Updated change log

Author: photonstorm

CHANGELOG.md

@@ -8,6 +8,9 @@
 * `Rectangle.SameDimensions` determines if the two objects (either Rectangles or Rectangle-like) have the same width and height values under strict equality.
 * An ArcadePhysics Group can now pass `{ enable: false }`` in its config to disable all the member bodies (thanks @samme)
 * `Body.setEnable` is a new chainable method that allows you to toggle the enable state of an Arcade Physics Body (thanks @samme)
+* `KeyboardPlugin.resetKeys` is a new method that will reset the state of any Key object created by a Scene's Keyboard Plugin.
+* `Pointer.wasCancelled` is a new boolean property that allows you to tell if a Pointer was cleared due to a `touchcancel` event. This flag is reset during the next `touchstart` event for the Pointer.
+* `Pointer.touchcancel` is a new internal method specifically for handling touch cancel events. It has the same result as `touchend` without setting any of the up properties, to avoid triggering up event handlers. It will also set the `wasCancelled` property to `true`.
 
 ### Updates
 
@@ -19,6 +22,10 @@
 * Device.OS has been restructured to allow fake UAs from Chrome dev tools to register iOS devices.
 * Texture batching during the batch flush has been implemented in the TextureTintPipeline which resolves the issues of very low frame rates, especially on iOS devices, when using non-batched textures such as those used by Text or TileSprites. Fix #4110 #4086 (thanks @ivanpopelyshev @sachinhosmani   @maximtsai @alexeymolchan)
 * The WebGLRenderer method `canvasToTexture` has a new optional argument `noRepeat` which will stop it from using `gl.REPEAT` entirely. This is now used by the Text object to avoid it potentially switching between a REPEAT and CLAMP texture, causing texture black-outs (thanks @ivanpopelyshev)
+* `KeyboardPlugin.resetKeys` is now called automatically as part of the Keyboard Plugin `shutdown` method. This means, when the plugin shuts down, such as when stopping a Scene, it will reset the state of any key held in the plugin. It will also clear the queue of any pending events.
+* The `Touch Manager` has been rewritten to use declared functions for all touch event handlers, rather than bound functions. This means they will now clear properly when the TouchManager is shut down.
+* The Touch Manager, Input Manager and Pointer classes all now handle the `touchcancel` event, such as triggered on iOS when activating an out of browser UI gesture, or in Facebook Instant Games when displaying an overlay ad. This should prevent issues with touch input becoming locked on iOS specifically. Fix #3756 (thanks @sftsk @sachinhosmani @kooappsdevs)
+* There is a new Input constant `TOUCH_CANCEL` which represents cancelled touch events.
 
 ### Bug Fixes