Added caching from Sprites.
Added support of the caching from Sprites.
Fix for bounds of camera.
Fixed sorting after deleting objects and some other fixes.

Fixed sorting after deleting objects. Fixed detection of the object on
the screen with a negative scale. Inheritance scrollFactor from owner
when object is added to entity.
Added debugMode flag and new method openURL().
Some arrays replaced on vectors.
Added drawing of the plugins.
Removed 'enable' flag and added support for AntG.debugMode flag.
Added support of the AntG.debugMode flag.