Allow environment to be installed with Python 3.12+

[namurphy]

If I remember correctly, pyhc-core only works on Python ≤ 3.11 since Kamodo currently doesn't work on Python ≥ 3.12. This PR makes installation of Kamodo contingent upon the version of Python being Python < 3.12.

Tasks

I'm making this a draft PR sort of as a placeholder, but hopefully I'll have a chance to come back to these tasks.

• Update pyproject.toml
• Test installation with Python 3.12 & 3.13
• Double check that Kamodo still doesn't work on Python 3.12+
• Add task to Kamodo import fails with Python 3.12 #9 to revert this PR when Kamodo supports Python 3.12+

[sapols]

Thanks again @namurphy, I appreciate it when you open issues.

I tried it again just now and pip install pyhc-core actually did pass with Python 3.12.11 (so did pip install pyhc-core[tests]).

I see Kamodo bumped their Python version to >=3.10 in September. Maybe that fixed it.

Although in doing that, I did find another problem on our horizon for Python 3.13: numpy<2 doesn't work in Python 3.13. So pip install pyhc-core fails in Python 3.13 because it fails to install numpy<2.

[namurphy]

...since NumPy v2.0.0 was released approximately 0.988 years ago, by now core packages should have either become compatible with NumPy v2.0.0 or have numpy<2.0.0 as an explicit upper limit. I haven't confirmed this yet, though.

[namurphy]

Thank you for following up!

Although in doing that, I did find another problem on our horizon for Python 3.13: numpy<2 doesn't work in Python 3.13. So pip install pyhc-core fails in Python 3.13 because it fails to install numpy<2.

Strange! I'm not sure what's happening here. I had a problem installing numpy==1.26.0 on CPython 3.13.0 because meson-build or something was missing, but I was able to get numpy==1.26.3 to install on CPython 3.13.0. 🤔

[namurphy]

@sapols — please feel free to edit this PR directly since I was kind of doing this as a prototype, and haven't had time to confirm that things are working.