wubloader/restreamer
Mike Lang c8724a1e63 rewrite fast cuts to support transitions being allowed later
In theory there should be no change in actual output for no-transition cuts,
even though we're handling the logic in a very different way.

This doesn't actually allow transitions, but sets up most of what is needed
..
restreamer rewrite fast cuts to support transitions being allowed later
Dockerfile Pin gevent version to work around build issues
setup.py Pin argh to avoid stupid breaking changes