I worked on Python 3.13 support for icalendar. My PR added 3.13 to the test matrix, tox config, classifiers and README, but a parallel change landed the test setup on main while it was in review. After merging main, my final contribution was:
- documenting how to add a new Python version in
docs/maintenance.rst, so the next upgrade is easier, - the changelog entry for 3.13 support.
Links: PR #729 • Issue #723