Finally, the last piece of VPython has surrendered to running on wxPython,
the label object. Some color/opacity details of label aren't quite right,
but for the first time I've seen text appear, after a long struggle. This
means that as far as I know we have an existence proof for a version of
VPython which 1) has essentially no platform-specific code and 2) has none
of the complications of threading.
Not ready for a release yet, but this is a significant milestone.
The latest code has been uploaded to the GitHub repository at