Clean up the code, make sure everything is properly working.
What's Changed
- Add a PHYSLITE file to testing by @gordonwatts in #210
- CI/Tests failing by @gordonwatts in #215
- fix: Remove deleted codecov Python package dependency by @matthewfeickert in #213
- Move to 3.12 by @gordonwatts in #216
Full Changelog: 2.1.1...2.1.3