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.
Fix with Projection
Turn the former 'FOV' app into 'Projection' app that also checks the (x,y) the camera looks at.