[Question] Tooling changes

[s-weigand]

As promissed in https://github.com/dr-prodigy/python-holidays/issues/338#issuecomment-662592391 I'm working on a PR to change the CI from travis to github actions and also add CD.

Since you liked the idea of using bump2version, for releas process.
I was wondering if would also be interested in some other changes:

• Autoformat code with black, so formatting code to look nice is a no brainer
• Add pre-commit to run back and flake8 on commit, like that there won't be commits like fix flake8 which I saw a lot on other projects
• Style check the tests with flake8, IMHO tests should also comply with styling rules
• Use pytest as testrunner, pytest is more prowerful (and gives prettier output) than good old unittest and would also allow to restructure the tests to mimic the projects structure, which again would make it easier to find corresponding tests
• Use tox so contributors can tests multiple python version locally

[s-weigand]

Also, since the coveralls action doesn't support xml reports, I would use codecov instead.
Nevermind the python client for coveralls finally supports github actions.

[mborsetti]

This would be so nice!

[dr-prodigy]

We are on the way to release this soon.. Closing this question, thx! 👍