Add python 3.13 support

[ffelten]

Description

Fixes #200 #176 => Numpy<2 is not published for Python 3.13 so I decided to remove the constraint. I believe the constraint was set due to other libraries that hadn't migrated to Numpy 2.0 back in January, was time to bump anyways.

Type of change

Please delete options that are not relevant.

• Chore

Checklist:

• I have run the pre-commit checks with pre-commit run --all-files
• I have run ruff check . and ruff format
• I have run mypy .
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[ffelten]

@g-braeunlich I'm having issues with Python 3.13 not being so keen on pickling code objects, see the error in the Python 3.13 tests. I am not sure what is useful/pickled in the current version so I'm not sure about what we should remove from the pickle.

[g-braeunlich]

Would have a patch for that issue. Do you want me to commit directly to your branch?

[ffelten]

Would have a patch for that issue. Do you want me to commit directly to your branch?

Sounds good !

[g-braeunlich]

pushed