Parametric Spinner Fidget Toy (with soft edges)

**Update**: "v3" Refactored some more, got some decent speed improvements, also cleaned up a bunch of the documentation.
**Update**: Fixed the bearing generation!

Re-mix of JAMESARM97's remix of slick8086's Parametric Tri-Spinner Fidget Toy.

I added some options to round your edges. Everything's (still) customizable.