Use proper config and set forceExit false

The forceExit configuration option causes the app to close with a failure
status code (-1).
Add back in duplicatePadding option.
No need to calculate frameNumber if only a single frame is there.
Merge pull request #550 from hneuer/anim

No need to calculate frameNumber if only a single frame is there.
Merge pull request #551 from MobiDevelop/duplicate-padding

Resurrect duplicate padding
Expose executeRunnables.
Merge branch 'origin/master'
added JsonValue#hasChild()
docs improved
Default serializer, customizes unrecognized objects instead of always getting JsonValue.
Merge branch 'origin/master'
Avoid some field accesses.
Made JsonValue iterable.
Rewrote EarClippingTriangulator, doesn't allocate.
More optimizations.
Javadocs.
Create md5 of distribution zip
Fix Issue 1649
Window touchUp() sets dragging to false