- Tests are failing due to testInterval(), but are being run correctly. On Python 3.12, `nose` is failing. We should upgrade to `nose2`, or more likely, switch from unittest + nose to pytest.
- Move tox config to setup.cfg for now
- TODO move to pyproject.toml instead of setup.cfg
- TODO remove .travis.yml

Remove setup.cfg and setup.py in favor of pyproject.toml

Nose and Tox are next to go. Nose seems to be failing on Python 3.10, no need for it any more as pytest should cover its features. Likely no need for tox either as we are using the matrix strategy in Github Actions, though it could be useful for local dev