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
now broadcasting keyboard events to all display objects
added support for updated ATF file format
fixed vertex data bounds if object is empty (closes #345)
removed obsolete import statement
updated transporter chief to use 'iOS-deploy' instead of fruitstrap

(Fruitstrap is no longer maintained.)
added some more vertex data tests