MathematicaToPython.py needs refactoring

[bdice]

The MathematicaToPython.py utility script is out of date and needs to be refactored. It refers to changed/removed APIs in coxeter.

Moreover, its intended usage isn't very clear to me, despite the long comment at the top. Is it possible to include a corresponding Mathematica script in this repository so the data is reproducible?

Should this file be kept someplace outside the coxeter package directory, in a scripts folder or something like that?

[vyasr]

It would be nice to write a Mathematica script for this. I think I spent a couple minutes once to figure out how to get the data, but I didn't spend the time to write one. I'm not sure whether this belongs in here at all; at this point maybe we just accept that these are the shapes from that paper, and not worry about how to regenerate them. If we want to keep it in, then I'm fine moving it to a scripts directory.