Bugfix release
- resolves stuck 'is_rendering' state when loading a file, as well as when toggling the wiggle effect on/off, which would be common troubleshooting steps if the wiggle effect stopped working due to this bug
- 'is_rendering' state now skips some code that may have been causing crashes when rendering. thanks to suggestion here: https://github.com/shteeve3d/blender-wiggle-2/issues/...
