- Update dependencies
- Drop support for Python 3.8 (importlib-metadata 8.7.0 doesn't support it)
- Drop support for Python 3.9 (icalendar requires Python >=3.10)
- TLS certificate config options for the OTRS backend
- Tools: downloadExchange
- End-Date: Changed default range from +1 day to plus one week
- downloadExchange: is now an installed binary
- RRules now support lists like BYDAY=MO,TU,WE
- The directory option in config now has the more explanatory name calendarfile
- The config option ticekttitel no longer exists since it should always be given in the event Summary
- OTRS: the event Summary is now correctly assigned to ticket title