Gyrospoon v0.6.1

Inspired by thing:1103935, this remix focuses more on usability and refinement. As opposed to having full rings, which could potentially get in the way of a mouth, and joints, which would enter the liquid (ie, soup) and retain some of it, the design aims to these issues.

Using MeshLab's Compute Geometric Measures Filter I was able to find the center of mass (COM) for the inner arm and non-symmetric bowl parts. A counterweight was then designed to bring the COM within 0.4mm of the rotation axi