Updated GitHub CI

[manodeep]

Upgraded min python and numpy versions, and changed the compiler versions and the linux os's tested

[manodeep]

Need to add Changelog. Not sure why the astropy bot is not running

[lgarrison]

Looks good, thanks for taking the time to update this!

Minor question: what's the motivation behind testing both the 1.22 and 1.23 versions of Numpy? Was there a C API change?

[manodeep]

Thanks @lgarrison. Nothing in particular, figured it would be better to test out the recent python and numpy versions - that's where I would expect things to break, if at all.

[manodeep]

@lgarrison Do we not have the astropy milestones checker bot anymore?

[lgarrison]

I guess not. It looks like astropy has migrated to GH actions instead. E.g. for changelog checking: https://github.com/astropy/astropy/blob/main/.github/workflows/check_changelog.yml, with the bot living at https://github.com/pllim/actions-towncrier-changelog

[manodeep]

Fixed the conflict in the changelog.

Looks like we would need to migrate to pyproject.toml before we can use towncrier and allied actions. That's beyond my knowledge - do you know how to do that?

[manodeep]

@lgarrison Okay to merge?

[lgarrison]

Yep, LGTM!

For pyproject.toml, in theory it's not too hard to set up while still keeping most of the work in setup.py, but the Corrfunc build has enough quirks/customizations that it would need some careful testing before we deploy anything. But towncrier might not actually need a fully-fledged toml file; maybe it just needs the sections relevant to it?