Rpp2d now support comments in their constructors.
auxutil.transform_rpp_to_box preserves comments
Finished RccZaligned
Cleaned up the raw2d.py file
Added RawZaligned which contains a Z-aligned 3D extension of the Raw2d object
Started adding functionality to make the conversion to 3D
Cleaned up box2d.py and Added BoxZaligned with is the 3D extension of the Box2d object
Added 3D extension of Rpp2d object
The entire problem should be extended to be 15 cm in the z direction