• Adjustment: option [auth] htpasswd_encryption change default from "md5" to "autodetect"
• Adjustment: switch from setup.py to pyproject.toml (but keep files for legacy packaging)
• Adjustment: 'rights' file is now read only during startup
• Add: option [auth] type=ldap with (group) rights management via LDAP/LDAPS
• Add: option [rights] permit_overwrite_collection (default=True) which can be also controlled per collection by rights 'O' or 'o'
• Enhancement: permit_delete_collection can be now controlled also per collection by rights 'D' or 'd'
• Fix: only expand VEVENT on REPORT request containing 'expand'
• Cleanup: Python 3.7 leftovers