• Enhancement: add hook support for event changes+deletion hooks (initial support: "rabbitmq")
• Dependency: pika >= 1.1.0
• Enhancement: add support for webcal subscriptions
• Enhancement: major update of WebUI (design+features)
• Adjust: change default loglevel to "info"
• Enhancement: support "expand-property" on REPORT request
• Drop: support for Python 3.7 (EOSL, can't be tested anymore)
• Fix: allow quoted-printable encoding for vObjects