The following is the first Travis CI build test of the development branch:
As you'll notice, it's great that the Python versions we've been actively maintaining for are working… but by expanding what versions we support, we've exposed the problems preventing those new versions from testing cleanly.
So, for this branch, get all versions to pass all tests (modifying tests and code as necessary), and in any cases where this is not possible for some reason, make a solid case for a solution (even if that means dropping support for that version). I expect it should be possible for all versions.
DONE / Accepting payments