This is much nicer than subdivision by angle but is somewhat less intuitive for users.
Added Bucket arc iterator, removing a lot of weird duplicated code in skeleton generator.
Adding symetry detection (right now, only primary symetries and only used to determine bone orientation).
Fixing bugs (infinite loops) in length based subdivisions.
Adding number of post processing passes parameter
This fixes up angle based subdivisions, adds embedding post processing methods (before, only average was there, added smooth and sharpen).
More parameters are controllable through the UI.
