Jkunicode

- Remove local additions from AGLFN data
- Rename method report_kill_list to report_kern_list
- Performance improvements
- Return kern_list as frozenset instead of list
- Typing annotations

- Update docs config (fixes [readthedocs](https://jkunicode.readthedocs.io/en/latest/) build)
- Add setter for `UniInfo.char`
- Remove printing of certain nice name transformations
- Use cached properties throughout
- Add tests for `UniInfo`

- Add cmdline option to report missing characters for a given orthography
- Update docs and docstrings
- Fix ignored characters parsing
- Handle script and territory tags in `OrthographyInfo.report_missing`

- Read globally ignored characters from ignored_characters.json
- Use overrides file for language names
- Improve language names for alphabetical sorting

- Fix UniInfo.script return value when UniInfo.unicode is None
- Implement "Unknown" script in uniScript.get_script
- Update Unicode data to version 15
- Update CLDR data to version 42
- Add command line option to output BCP47 subtags instead of names
- Add py.typed file

Install or update via pip:
bash
pip install -U jkunicode