3.1.3
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* Experimental support for ui:expanded expanders
* Changed steps and note visuals, less yellow now
* Cleaned up some links handling, some API changes
* Added accessible titles on notes in DocBook and Mallard, #613267
* Mallard media type attribute defaults to 'image', per spec
* Fixed seeie/seealsoie formatters in DocBook
* Fixed the link text for DocBook glossentry links
* Fixed formatting of DocBook inline quotes
* Add PI to suppress DocBook section links, bug #346397
* Experimental Mallard Glossaries extension  
* Updated translations:
  de    (Christian Kirbach)
  es    (Jorge González, Daniel Mustieles)
  gl    (Fran Dieguez)
  he    (Yaron Shahrabani)
  lt    (Aurimas Černius)
  lv    (Rudolfs Mazurs)
  nb    (Kjartan Maraas)
  pa    (A S Alam)
  ru    (Yuri Kozlov)
  sl    (Matej Urbančič)
  sv    (Daniel Nylander)
  tr    (Muhammet Kara)
  zh_CN (Aron Xu)