Adding Python 3.13 support

[terop]

Python 3.13 has been released some time ago and having nordpool officially supporting Python 3.13 would be nice. AFAIK the only obstacle for doing this is coveralls-python not supporting it. I have a PR open for adding support but the maintainer has not yet reacted on it. Given the amount of time passed since opening the PR I don't see support being added anytime soon.

In the meantime I have myself added support in a forked repository of nordpool: terop@8c702e4. This commit can obviously not be merged into this repository (as is at least) but has enabled me to use Python 3.13. I would thus like to raise the question on how to proceed: could some alternative solution to coveralls-python be implemented or maybe do something else entirely?

[terop]

@kipe could you kindly take a look at this at some point?

[kipe]

0.4.4 is now released, dropping coveralls and adding support for 3.13 as well as all upcoming 3.x versions (this is so simple library, that I doubt anything would break).

https://github.com/kipe/nordpool/releases/tag/0.4.4

[terop]

Thanks!