*`BaseSoundManager.isPlaying` is a new method that will return a boolean if the given sound key is playing. If you don't provide a key, it will return a boolean if any sound is playing (thanks @samme)
* Calling `Timeline.pause` will now pause any currently active Tweens that the Timeline had started (thanks @monteiz)
* Calling `Timeline.resume` will now resume any currently paused Tweens that the Timeline had started (thanks @monteiz)
* Calling `Timeline.clear` and `Timeline.destroy` will now destroy any currently active Tweens that the Timeline had created. Previously, active tweens would continue to play to completion (thanks @monteiz)
*`TimelineEvent` has a new property called `tweenInstance`. If the Timeline event has a tween that has been activated, this will hold a reference to it.
* If you create a BitmapText with an invalid key it will now throw a runtime error. Previously it just issued a console warning and then crashed (thanks @samme)
* The `requestVideoFrame` polyfill has been updated to the latest release, which should resolve some SSR framework issues. Fix #6776 (thanks @lantictac)
* The method `TextureManager.checkKey` will now return `false` if the key is not a string, which fixes issues where a texture could be created if a key was given that was already in use (thanks Will Macfarlane).
* The `EXPAND` scale mode had a bug that prevented it from using the world bounds cameras, cutting rendering short. Fix #6767 (thanks @Calcue-dev @rexrainbow)
* Calling `getPipelineName()` on a Game Object would cause a runtime error if running under Canvas. It now simply returns `null`. Fix #6799 (thanks @samme)
## Examples, Documentation, Beta Testing and TypeScript
Thanks to the following for helping with the Phaser Examples, Beta Testing, Docs, and TypeScript definitions, either by reporting errors, fixing them, or helping author the docs: