ci: 3.13 and some touchup

[henryiii]

Adding 3.13, some touchup, should be faster. One CI run per Python version.

Fixing CI in #202.

[henryiii]

@HDembinski, are you maintaining here, or do you need/want help? I believe this is the last package holding back adding Python 3.13 for the scikit-hep metapackage. Edit: Oh, I thought there were binary wheels for some reason - I think I'm getting it mixed up with pyhepmc. Might be able to go ahead, will try.

[HDembinski]

I am maintaining and there used to be binary wheels, but I moved the compiled code into scipy.

[HDembinski]

The failures are unrelated to this patch, just a DeprecationWarning. I am going to keep this open until this is fixed.

[henryiii]

Fix in #202

[henryiii]

Ah, so it used to compile wheels, maybe that’s why I was confused. It’s probably not a blocker, then, though it would be nice to have the 3.13 classifier on everything ensure that everything is ready. (pylhe also doesn’t have a release with the classifier yet, though it’s in main). We don’t have very much testing for the scikit-hep metapackage to verify it all works.