TwistyPuzzleLib

'Simple' and 'Nice' meshes: fix Ivy.

'Simple' and 'Nice' meshes: fix Rex.

Introduce 'Simple' and 'Nice' meshes.

In the 'magic' app, ObjectType is now only used in RubikObject and RubikObjectList classes and nowhere else.
This is a major step towards being able to download objects from an online repository.

Progress replacing the enum ObjetType with the class RubikObjectList.

Fix projection matrix with which the puzzles get rendered: make it independent of the aspect ratio of the underlying surface.

Progress with ConfigPane.

Progress with ConfigScreen.

Progress with ConfigScreen.

Better error reporting.