FlixelCommunity/flixel — pull request #116 by Dovyski (2012-10-07 04:26:39+00:00)
Title: Fix FlxGroup sort() crash if it encounters another FlxGroup

If an object does not have the sorting property, it is placed at the end of the list.

Fix:
https://github.com/FlixelCommunity/flixel/issues/28
https://github.com/AdamAtomic/flixel/issues/204