Changes in 2.91.90:
-------------------
* Default to ghelp:gnome-help
* Full text per-document search, using sqlite FTS
* Use symbolic icons for bookmarks and location entry
* Don't require DocBook DTDs; provide entities internally
* Removed bookmark editor, added bookmark toggle icon
* Updated translations:
  ar       (Khaled Hosny)
  bg       (Ivaylo Valkov)
  el       (Michael Kotsarinis)
  es       (Daniel Mustieles, Jorge González)
  et       (Ivar Smolin)
  gl       (Fran Diéguez)
  gu       (Sweta Kothari)
  he       (Yaron Shahrabani)
  id       (Andika Triwidada)
  nb       (Kjartan Maraas)
  nl       (Hannie Dumoleyn, Redmar)
  sl       (Matej Urbančič)
  sr       (Мирослав Николић)
  sr@latin (Мирослав Николић)
  uk       (Daniel Korostil)
  zh_CN    (Aron Xu)
  zh_HK    (Chao-Hsiung Liao)
  zh_TW    (Chao-Hsiung Liao)