TwistyPuzzleLib

correction.

remove numLayers from 4 API methods.

Clean up TwistyObjectWithMesh's API (remove getDist3D() and getSize() )

Make calculation of circumscribed radius work for any current and future object.

Cleanup

Cleanup

Merge branch 'separate-mesh'

1. Conflicts:
2. src/main/java/org/distorted/objectlib/main/TwistyObject.java

bugfix (move iconode to TwistyObjectWithMesh as mesh creation sometimes depends on the mode)

preparation for separating Mesh into its own class

port fixes from master