removed redundant code
added 'Tween.progress' property (closes #321)
added new autoSize mode: 'BOTH_DIRECTIONS' (refs #272)
fixed check for state changes in quad batching

previously, quads with different blend mode did not cause a state change
extended 'flatten' api documentation
Update AssetManager.as

get the correct extension with url like this:
"abc/xyz.extension?get_param=something"
Merge pull request #325 from peerobo/patch-2

AssetManager now gets correct extension in urls like this: 'abc/xyz.ext?param=something'
better 'dispose' handling in 'removeFromParent' (closes #330)
EventDispatcher: optimized access of listener[i] in removeEventListener()
Merge pull request #334 from joshtynjala/removeEventListener

EventDispatcher: optimized access of listener[i] in removeEventListener()
now using a minimum texture size for filters (closes #312)

to avoid constant texture recreation when filter region gets small.
auto-trimming number of used quad batches (closes #329)
now using a stable sort algorithm for 'sortChildren' (closes #304)

It's a merge sort algorithm that doesn't do any allocations while it runs.
fixed mergeSort result order
fixed draw count display

It was wrong when there were only quads on the stage (no images).
added 'alignPivot' method to DisplayObject class (closes #293)
added optional 'id' paramter to 'TouchEvent.getTouch' method (closes #198)
now removing text field from Button if text is empty
now logging warning when adding the same asset name twice (closes #339)

Previously, an exception was thrown.
added support for RectangleTextures in AIR 3.8