Working on FlxUISpriteButton and adding IFlxUIWidget interface
Making everying use IFlxUIWidget, removing Reflection and other cruft
Working on FlxUIGroups
Removing cruft from FlxUIGroup
Fixing up IResizable
Adjusted Regions, Tweaked TileTest, and added resize_points
Added ability to put <anchor> tags inside of <align> tags
More changes to FlxUIGroup, fixing it up to be a FlxSpriteGroup