Major changes in 3.19.92:
* Updated translations for:
    * Brazilian Portuguese (Enrico Nicoletto)
    * Czech (Marek Černocký)
    * Finnish (Jiri Grönroos)
    * Galician (Marcos Lans)
    * German (Bernd Homuth)
    * Greek (Efstathios  Iosifidis)
    * Hungarian (Balázs Úr)
    * Kazakh (Baurzhan Muftakhidinov)
    * Korean (Seong-ho Cho)
    * Latvian (Rūdolfs Mazurs)
    * Lithuanian (Aurimas Černius)
    * Polish (Piotr Drag)
    * Portuguese (Duarte Loreto)
    * Russian (Stas Solovey)
    * Serbian (Марко М. Костић)
    * Slovak (Dusan Kazik)
    * Slovenian (Matej Urbančič)
    * Spanish (Daniel Mustieles)
    * Swedish (Anders Jonsson)
* Don't attempt to update read-only events (Fosero)
* Timezone handling improvements (Fosero)
* Fix crashes when no end date is passed (Monique Faria, Iain Lane)
* Improved week numbers in Year View (Isaque Galdino)
* Make year view respect Shell's 'show-weeknumber' setting (Isaque Galdino)
* Change month when keynav moves the previous/next month (pandunonu2)
* Improve month view drawing (Fosero)
* Draw a background to the selected days in month view (Fosero)
* Respect 12/24h hour format (Anwar Sadath)
* Fade out past events (Monique Faria)
* Smaller code fixes and updates