4.20.0 - Redesigned appointment window recurrence tab. Related with Issue #23. - Internal changes, changed appointment window to subclass of GtkWindow - Internal changes, changed mainbox to subclass of GtkApplicationWindow (MR !48) - Moved internal CSS string to separte theme file (MR !47, MR !65) - Added command line parameter '-i' to import ICS files - Rudimentary synchronization support: added support for calling a user-specified synchronization command - Fixed Gtk-CRITICAL message while adding new appointment. - Replaced Orage wake up detection with wake up detection from panel clock plugin. - Fixed memory leak and error handling when timezone info loading fails. (MR !56) - Added support for TZDIR environment variable (Issue #28). - Updated desktop file: added actions for 'today' and 'new appointment' (MR !58), added Keywords (MR! 64) - Recurrence tab improvements: fixed dependency from ICAL RRULE (MR !59, MR !52, Issue #23, Issue #29) - Use gettext and XDT_VERSION_INIT (MR !60) - Internal changes, changed day window (MR !62) - Disabled tray icon by default, (MR !66, MR !64) - Translation Updates: Albanian, Amharic, Arabic, Armenian (Armenia), Asturian, Basque, Belarusian, Bulgarian, Catalan, Chinese (China), Chinese (Taiwan), Croatian, Czech, Danish, Dutch, English (Australia), English (United Kingdom), Esperanto, Estonian, Finnish, French, Galician, German, Greek, Hebrew, Hungarian, Icelandic, Indonesian, Italian, Japanese, Kazakh, Korean, Latvian, Lithuanian, Malay, Norwegian Bokmål, Norwegian Nynorsk, Occitan (post 1500), Polish, Portuguese (Brazil), Portuguese, Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, Ukrainian, Urdu (Pakistan), Urdu, Uyghur, Vietnamese