Adding a python 3.10 trove

[chayim]

Added a python 3.10 trove for pypi - as I'm running this without issue in CI with 3.10.

• I have updated the documentation in the README.md file or my changes don't require an update.
• I have added an entry in CHANGELOG.md.
• I have added or adapted tests to cover my changes.
• I have run tox -e fix-style to format my code and checked the result with tox -e style.

[chayim]

I haven't executed on all the items within the checklist as tests and tox style checks seem to not apply here.

[codecov-commenter]

Codecov Report

Merging #266 (bdd6541) into master (6ffd70a) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #266   +/-   ##
=======================================
  Coverage   99.37%   99.37%           
=======================================
  Files          18       18           
  Lines         635      635           
=======================================
  Hits          631      631           
  Misses          4        4           

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[jendrikseipp]

Thanks for the PR! Before marking Python 3.10 as supported, I'd like to enable CI tests for it, however. Do you think you could make the necessary changes (in tox.ini and .github/workflows/main.yml)? Afterwards, please add an entry to the changelog.

[chayim]

Perfect, happy to, I just didn't want to presume ;). It's included in the latest push.

[jendrikseipp]

It seems the tests are not passing. Can you look into this, please?

[jendrikseipp]

Looks good. Thanks!