what's new:
unsupported TZID in iCal causes entire import to fail
Handle redundant time zone info UTC and timestamp with Z at the end
Calendar bugfixes:
fixed If start date is before given end date due to time zone difference, date displayed in event preview is misleading
fixed when end date is in a different time zone, user cannot specify a valid date in the event editor date picker
fixed When importing many events, only one event gets imported, with error message "ownerEncSessionKey already set"
fixed Events at midnight at event banner don't show up
fixed Calendar signup on iOS fails with "Tried to use mobileSystemFacade in web"
fixed No error popup after setting end time before start time by selecting different start and end time zones
fixed Calendar does not update to reflect updated invitations to events from Google Calendar
fixed End date flickers and rapidly cycles through dates in event editor