Fixes "ErrorException: Fatal Error: Class 'Waindigo_GoogleCalendar_GoogleCalendarHandler_Abstract' not found" error.
Added option to send alerts as reminders of events to users on specified number of days before an event takes place.
Added support for Repeat Events by Waindigo, allowing recurring events to be created.
Added ability to RSVP to events, including associated permission.
Added importer from XenAtendo 1.4.6 for XenForo (premium feature, may work for other versions of XenAtendo, but not tested).
Fixed bug that may be unable to export as iCal due to missing files.
Changed thread_create template modification to be more compatible with other add-ons.
Fixes "Waindigo_GoogleCalendar_GoogleCalendarHandler_Abstract not found" error if Google Calendar API by Waindigo is not installed. Google Calendar API by Waindigo is NOT required to use this add-on.