Bugfixes:
- eventAllow and constraints not respected when dragging event between calendars
- viewSkeletonRender now in typedefs (#4589)
- invalid draggedEvent properties in eventAllow for external dnd (#4575)
- forceEventDuration not working with external dnd (#4597)
- rrule displaying time when allDay is true (#4576)
- rrule events not displaying at interval start (#4596)
- prev button not initially working when starting on 31st of a month (#4595)
- clicking X in popover generating a dayClick (#4584)
- locale file used as single script tag not affecting calendar locale (#4581)
- header "today" button not translated for pt and pt-br (#4591)
- fa locale typo (#4582)