Pyglet 2.1 issues

[einarf]

Notes from https://github.com/pythonarcade/arcade/pull/2226

To resolve:

• [ ] Verify that the workaround for pyglet font loading changes works
• [ ] (Upstream) Whatever's going with Screen types and pyglet's import trickery
• [ ] (Upstream) Resolve upstream Python font issues:
  • [ ] split bold into string weight + bold
  • [ ] investigate obliqueness values + split if necessary
• [ ] Look for ways to simplify and/or make our Text more durable
• [ ] The GUI stack & event handlers?

[einarf]

Just in case you didn't see this one @pushfoo

[pushfoo]

This either done or should be another issue.