Checking _frameData before disposing it
Set scale to 1.0 in Texture.empty() calls.
Better handling of dispose()
Merge pull request #5 from meez/fix-issue-1

Fix of Issue 1
Merge pull request #6 from meez/fix-issue-4

Fix of Issue 4
fixed sprite transformation setting while converting.

future transformationMatrix setting should use matrix.clone() instead of matrix.copyFrom(), as copyFrom does not trigger starling display object transformationMatrix setter, which actually does all the transformation inside.
Merge pull request #7 from barisdemirdelen/master

fixed sprite transformation setting while converting.