Fix a lot of Lint warnings in the apps.
Change of names.
Hide the 'depth' of a DistortedTexture inside the library, so users do not get exposed to this weirdness.
Complete the split DistortedObject -> (DistortedTexture,DistortedEffectQueue)
Beginnings of split of DistortedObject into two separate classes: DistortedEffectQueues and DistortedTexture.
Still does not compile, but pushing already.
Rename various classes; fix a bug in Around the World.
More fixes for the recent API change.
Major change in API: separate the GRID from DistortedObject; completely remove classes derived from DistortedObject.
Make the effect Center be always 3D.
Unify Effects3D and Matrix3D (still incomplete!)
Tidy up 'Matrix3D'
Skeleton of the new App: Vertex3D. So far just a copy of Matrix3D.
Rename Effects3D to Matrix3D