TextMetrics.wordWrap() now considers TextStyle.letterSpacing (#4545)

Add unit tests for Application.ticker setter (#4730)

Fixes WebGL bug when Text only contains line breaks (#4627)

Matrix fix (#4675) ...

* Fixed nested stencil masks not rendering correctly.

* Fixed jslint errors.

* Documented the changes.

* Fixed Matrix.setTransform gives different result from Transform.updateLocalTransform.
Return rotation instead of skew if skewX+skewY is slightly below 360 degrees.

* Reset rotation when there is skew.

* Added test case for setTransform->decompose.

* 2 * Math.PI -> PI_2

Expose earcut dependency in PIXI.utils (#4676)

Improve setChildIndex error message (#4644)

Better support for various Spritesheet trimmed formats (#4490)

Fixes disabling interactive children outside of hitArea (#4608)

Add unit test for #4423 (#4431)

Ensures that text style properties are copied by value, not by reference (#4385) ...

* Ensures that text style properties are copied by value, not by reference
Fixes an issue where

* removed duplicate code

* Reduce loop over object properties to within deepCopyProperties

Improving SVG handling in Spritesheets with sourceScale support (#4271)

Add autoStart option to PIXI.Application (#4208) ...

autoStart option allows users to configure the ticker before starting the
rendering. That helps to synchronize audio and to control ticker for
asynchronous recording using this.ticker.update.

Before deleting texture from cache, check that it's the same one passed into removeFromCache (#4198)

Includes the sum in the error thrown when trying to create a texture (#4159) ...

* Includes the sum in the error thrown when trying to create a texture from a base using an invalid rectangle

* Casts quantities to type number in Rectangle constructor

Fix Sprite.containsPoint edge handling (#4092) ...

* Fix Sprite.containsPoint edge handling

* Fix TilingSprite.containsPoint edge handling

fix negative width/height of rectangle (#4074)

Fixes clear error on CanvasRenderer with no child container (#4065) ...

* Fixes clear error on CanvasRenderer with no child container
https://github.com/pixijs/pixi.js/issues/4045

* Unit tests to check that .clear() can be called on a freshly created renderer with no containers added

* Wrapped WebGL test in withGL

fix for issue #4043: CORS not working with PIXI.Sprite.fromImage (#4050)

Adds unit-test for graphic hole (#4030)

Fixes Loader overriding destroy with removeView arg (#4018)

modularized removeItems #3939 (#3977)

Removed unit test for deprecated Texture cache functions (#3970)

Fixes priority adding of ticker listeners (#3958)

Fixes issue with addOnce on ticker (#3938)

Fix destroyed textures throwing errors when destroyed again. (#3931)

Measure Text API, expanded (#3921) ...

* Added TextStyle.measure function (Applies to https://github.com/pixijs/pixi.js/issues/3903).

* Moved measure function from TextStyle to Text and made static.

* Updated JSDocs.

* Updated JSDocs again.

* Updates based on suggestions by @bigtimebuddy in PR.

* Created PIXI.MeasuredText to capture all the information for measuring text.

* Fixes for ESLint

* Fixes for ESLint

* Added PIXI prefix to returning MeasuredText.

* Added import for MeasuredText in Text.js.

* Refactored MeasuredText to TextMetrics and moved `measure` function into it.

* Forgot to move Text.wordWrap to TextMetrics.wordWrap

* Further cleanup of TextMetrics.

* Fixes suggested by @bigtimebuddy

* Removed clone and equals from TextMetrics as they are unnecessary.

* Destructured references to TextMetrics instance in Text and privatized TextMetrics.wordWrap.

* Deprecates calculateFontProperties & getFontStyle

* Moved getFontStyle to TextMetrics

* Made toFontString method on TextStyle

* Cache calls made to context.measureText for individual characters

* Use a smaller (10x10) canvas for TextMetrics

Improvements to how and what is stored in the texture caches. (#3834) ...

* Improvements to how and what is stored in the texture caches.
Built upon the good work from https://github.com/pixijs/pixi.js/pull/3789
+ For Text, the base textures were in the BaseTextureCache, but textures weren't in the TextureCache. This has been fixed
+ Now able to tell the BaseTexture the origin of where the canvas being passed through has come from. ie. was it from the text class? was it from the graphic class? was it from caching as a bitmap? More information now to track where these canvases (canvii??) have been generated from
+ BaseTexture has addBaseTextureToCache and removeBaseTextureFromCache functions, to match regular Texture. Any adding or removing to the BaseTextureCache is now through these functions

! Breaking change. When you call Texture.fromTextureFromCache - it no longer automatically removes it's base texture from the base texture cache. Not sure how people feel about this

? I don't like lines 233 to 236 in Texture.js, and line 591 in BaseTexture.js - I don't see why they are there or why they are needed, but I chickened out on removing them!

* Renaming function to more generic names

* Adding deprecation layer

* Fixed trying to add texture to BaseTexture cache causing unit test fail

* Fixed reading from the wrong cache

* Able to remove textures and base textures from their caches via object instances
Added debug warning if trying to add a texture to a cache id that already exists
Added unit tests

* Default string for texture origin

* Different object creation style

* textureCacheId is now an array of potential entries

* textureCacheId changed to textureCacheIds

* Removed unneeded string creation

Hot-fix for Ticker's destroy (#3904) ...

* Fixes an issue when destroying ticker on callback

* Handles more cases when destroying

Adds Ticker priority argument (#3859) ...

* Adds ticker priority

* Removes EventEmitter dependency from ticker

* Small optimization to avoid Function.call

* Changes ticker priority with UPDATE_PRIORITY const

* Fixes linting

* Use a linked list approach to ticker listeners

* Oops fixes test

* Minor fixes

* Removes unnecessary destroy check

* Minor optimizations

* Adds memory clean-up to Ticker

* Updated documentation

* Rename local `last` to `previous`

Small Texture Cache enhancements (#3789) ...

* Textures track cache id and remove from cache in destroy.

* Added tests related to texture cache contents.