Even more rigorous data validation

fixed issue with temp disabled renderers

default to animated for backward compatibility for older jiggle physics.

Updated to unity 6, fixed build bug causing boot exceptions.

whoops, editor doesn't help me with precompiler placement.

Fixed issue where scene loads could still trigger the harmless except…

…ion.

Only if the first scene didn't contain any jiggle rigs.

Fixed cache invalidation issue, manager spawn issue. Fixes #35

Also fixed a bug where the manager tries to spawn during OnValidate, which isn't valid and causes very scary (though harmless)  exceptions on build.

fixed bug with the settling teleport corrupting the last valid pose.

Only initialize rigs if they haven't already been.

ignoring an end bone in a single chain no longer causes an invalid tr…

…ee to be generated.