+- Consolidate common code in Xestia Calendar and Xestia Address Book into
+ common libraries.
+- Make sure all text in Xestia Calendar is translateable.
+- Add calendar sharing/permissions support.
+- Be able to export (and import) to the following formats:
+ - iCalendar 2.0 format (single and multiple entries).
+ - LibreOffice Database format.
+- Implement RFC7986 - New Properties for iCalendar.
+