Complete the split DistortedObject -> (DistortedTexture,DistortedEffectQueue)
Rename various classes; fix a bug in Around the World.
Major change in API: separate the GRID from DistortedObject; completely remove classes derived from DistortedObject.
Minor
Tidy up 'Cubes' app
Revert the Cubes App.
some improvements for the way we test DistortedObjects.
Add License
Initial commit