Parametric N-Sided Dreidel

I wanted to create N-sided dreidels and figured somebody else might want to as well! Currently this only supports between 3-8 sides, although if there's any interest in creating more I can do some more work to derive necessary coefficients.

I've found that this dreidel spins really well with 5 and 6 sides. When rendering the part for printing, make sure you scale up cone_fn to 512 as 32 is just used for easy debugging and manipulating.

This work started from phooky's code, but has major differences including the ability to place arbitrary characters and a cone which should spin significantly better.

The cone creation utilizes an OpenSCAD rocket nosecone library which can be found at:
https://www.thingiverse.com/thing:2004511

Changelog
V1.0.1: Characters are now in the center of each face