Allow pymdownx-superfence-filter-lines-python to work with python 3.7-3.11

[geoffreyweal]

What's needed?

Hey @llucax . As mentioned here, pymdownx-superfence-filter-lines-python currently is restricted to running on 3.11+.

Can pymdownx-superfence-filter-lines-python be allowed to run on python version 3.7+. Currently, the pip package in https://pypi.org/project/pymdownx-superfence-filter-lines/ restricts the user to using python 3.11+

Thanks!

Proposed solution

Lower the minimum required python version in pyproject.toml and expand the matrix in .github/workflows/ci.yaml to test with python 3.7, 3.8, 3.9 and 3.10 too.

Fix any issues that appear with the lower python versions.

[llucax]

Updated the issue description to propose a solution (with some minimum steps that need to be done).

[jack-herrmann]

@llucax Most of the changes were pretty trivial. But since this repo depends on the repo-config, which requires python 3.11, we could either just remove the requirement or make repo-config support older python versions. What would you recommend I look into?

[Marenz]

Do the CI actions still work when repo-config would be removed as requirement? I think they hook a lot into it.
But maybe it won't be too hard to make it downwards compatible. You could do a superficial look and see how much work it might be.

(luca is a away this week)

[llucax]

@jh2007github mmm, interesting. Removing repo-config will break releasing and other stuff, so it is not really an option. I would say just try to make repo-config compatible with 3.7, but if it is too much work, I will delay this, as is it not a priority.

[jack-herrmann]

@llucax I briefly looked at what needs to be done. I think it should be manageable. So I guess the question is, whether I should do it now or if there is something more important to do.

[llucax]

If you think it won't take much time (just one or two hours), please go ahead!