Adding ability to remap FlxTilemap indeces, so you can use "artist-friendly" tile layouts
Added some things to FlxTilemap and created a FlxClickArea (simplified FlxButton)
Fixed openFL bug in BitmapFrontEnd, added invisible click area object, "FlxClickArea"
Merge remote-tracking branch 'larsiusprime/dev' into dev

Conflicts:
	flixel/ui/FlxClickArea.hx
Fixed artifacts in FlxClickArea
Stupid Typo
Missing import.
Merge branch 'dev' of https://github.com/HaxeFlixel/flixel into dev
Fixed issues @crazysam mentioned
Merge remote-tracking branch 'origin/dev' into dev

Conflicts:
	flixel/system/frontEnds/BitmapFrontEnd.hx
Fixed more issues @crazysam mentioned (added more documentation), also added
Merge remote-tracking branch 'origin/dev' into dev
FlxTilemap: Addressed comments - formatting.
Merge remote-tracking branch 'origin/dev' into dev