StageSizeScaleMode: Fix flashSprite position
Style fix
Changed FlxMouse from public to default/set, allows for smarter/safer/easier custom replacement of FlxMouse
FlxMouse: Removed extraneous import
Merge pull request #939 from larsiusprime/flxg-flxmousesetter

Changed FlxG.mouse to default/set rather than just public
Updates the Preloader to work again

This was made possible by the new update Joshua did to the ApplicationMain.hx
Merge pull request #940 from sruloart/dev

Updates the Preloader to work again, safely
Added super.destroy() to overridden destroys
FlxTypedButton: Added check to make sure label is visible before drawing it, so you can make it invisible if you want (needed for flixel-ui)
Merge pull request #945 from zedutchgandalf/dev

Added super.destroy() to overridden destroys
Merge pull request #946 from larsiusprime/flxtypedbutton-label-visibility

FlxTypedButton: Added check to make sure label is visible before drawing...
Move FlxBuildMacros.buildFileReferences() to FlxAssets
Update CHANGELOG.md
new atlas packer formats support
~committed to dev~
Fixes the Null error in Haxe 3.1+ when using a FlxAtlas and compiling to a cpp target.
First pass at making FlxBasic objects aware of which group they're contained in.
Improvements to FlxBasic / FlxGroup refactor.
Fix for removing objects.
Removing _visibleMembers / _activeMembers optimizations since they seem to cause issues when objects are destroyed.