Cleanup.
Fix for adding a single DistortedObject to a DistortedNode tree multiple times.
Add license
remove the remains of DistortedBitmaps from DistortedNode
Beginnings of support for PostShader effects (SavePNG, SaveMP4)
Minor cleanup.
Fix for issue 1: 'FBO not visible' : we forgot to clear the HashMap in DistortedNode.
Make deep copying DistortedObjects (needed in DistortedNode) standard.
Defensive programming.
Provide support to add any class derived from DistortedObject to DistortedNode.
Fix javadoc errors
Initial commit