New version 1.30 released

- fixed an issue with daylight saving time not being used properly resulting in events around time shifts to be off by one day or hour
- added option to change daylight saving offset (for time zones which have more than a +1h time shift)
- fixed changes to calendars not being shown if affected calendar is not default calendar
- added color indicator to show to which calendar an event belongs to (can be disabled in settings)
- added option to exclude specific calendars from the list