4.15.0

- Pull in new fallback icon from Adwaita
- Add new app icon and switch to rDNS icon name
- Avoid redundant calls to backdrop_changed_cb (Bug #16773)
- Move from exo-csource to xdt-csource (Bug #16717)
- Increase minimum desktop icon size to 16 (Bug #16667)
- Correct spelling of file system (Bug #16543)
- Increase desktop icon increments to 2 (Bug #16668)
- Unselect all items after single click activation
- Fix memory leak when reconnecting DP monitor (Bug #16314)
- Fix regression caused by (Bug #16342)
- Fix transparent background color (Bug #16380)
- Add Shift+Ctrl+N keybinding for Create Folder (Bug #15660)
- Ignore modifier key events in type-ahead find (Bug #11149)
- Added type-ahead find for Desktop icons (Bug #11149)
- Do not insert hyphens at intra-word line breaks (Bug #16339)
- Replace deprecated G_FILE_MONITOR_EVENT_MOVED (Bug #16342)
- Translation Updates: Albanian, Amharic, Arabic, Armenian (Armenia), Basque,
  Belarusian, Belarusian (Tarask), Bulgarian, Catalan, Chinese (China),
  Chinese (Hong Kong), Chinese (Taiwan), Croatian, Czech, Danish, Dutch,
  English (Australia), English (Canada), English (United Kingdom), Estonian,
  Finnish, French, Galician, Georgian, German, Greek, Hebrew, Hungarian,
  Icelandic, Indonesian, Interlingue, Italian, Japanese, Kazakh, Korean,
  Lithuanian, Malay, Norwegian Bokmål, Norwegian Nynorsk, Occitan (post 1500),
  Persian (Iran), Polish, Portuguese, Portuguese (Brazil), Romanian, Russian,
  Serbian, Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, Uighur,
  Ukrainian, Uzbek
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