…. (#19)

- Update configurations for prettier
- Update pre-commit hook
- Update links to GitHub repo due to organization rename
- Unify GitHub actions with other repos; mainly nicer naming
- Run tests also on Python 3.10.
- Switch to poetry-core (might speed up installation in some cases)
- Update version number
- Update urllib3 in lockfile, so tests pass on Python 3.10 and avoid security warnings about urllib3 vulnerabilities