Log Message:
kcalendarcore: update to 5.93.0

5.82.0
Don't export UTC timezone as TZID=UTC

5.83.0
Allow sorting of todos by category (tag)
Use UTC times when calculating the transition dates of standard and dst phases
Remove conditional compilation for libical older than 3
Fix Compat-libical3-eGroupware.ics

5.84.0
Assign and compare more Incidence::Private members
When sorting to-dos, treat undefined dtDues as later than defined dtDues
Generate pkgconfig file
Return start datetimes for non-recurring incidences

5.85.0
Fixup include dir into pkgconfig file
Hide fields, to enforce uniform use of setFieldDirty()
Fix formating in apidoc for free busy
Add ownerChanged signal
Add metadata properties to calendar
Add base class for calendar plugins
More completion field consistency and dirtyness checks
Mark mCompleted as dirty if it changes, and also reset status

5.87.0
Set the correct last modified time when creating an exception for a recurring event
icalformat_p.cpp - support ATTACH parameter FILENAME
Add Qt5Gui as dependency in pkgconfig file
Read floating date time as LocalTime
Implement PERIOD support in RDATE

5.88.0
Dirty fields and update observers in Event and FreeBusy
Dirty fields and update observers in Incidence
Dirty updates in IncidenceBase
Move IncidencePrivate and IncidenceBasePrivate to headers
Simplify IncidenceBasePrivate constructors
Rename incidence classes from Foo::Private to FooPrivate
Copy improvements in recent changes to Event etc
cmake: Port to using libical's cmake scripts

5.89.0
Compare the objects managed by a QSharedPointer
Avoid update calls if nothing changed
Consistency and range checking for GEO data
Check validity of priority value

5.90.0
ICalFormat: reduce calls to dtStart()/dtEnd(), use the local vars
Fix timezone information being lost when creating events

5.91.0
Revert "Honour STATUS:CANCELLED"
Serialize container sizes as 32bit integers
Compare timeSpec() for the due date/time, too
Fix generate pkg file
T12270: create an inheritance hierarchy of private types

5.92.0
Compare timeSpecs when comparing incidences for equality
Preserve timeSpec of all-day event's dtEnd

5.93.0
Notify on notebook change for exceptions
Note use of low-level libical function
Print more information about errors when loading vCalendars
Implement notebook association when parsing iCal data
Fix storing of times with UTC offsets
Compare QDateTime times, timespecs, and timezones