[grilo-plugins] (12 commits) Non-fast-forward update to branch wip/jfelder/acoustid-retrieve-more-keys

[Jean Felder <jfelder src gnome org>]

The branch 'wip/jfelder/acoustid-retrieve-more-keys' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  dbe9628... tests: Update acoustid mock objects
  6bbba57... acoustid: Retrieve additional keys

Commits added to the branch:

  9ef97b5... Update Latvian translation (*)
  4f3e0dc... Update Croatian translation (*)
  3d5f594... theaudiobd: Fix thumbnail retrieval (*)
  652d6c7... Czech help translation (*)
  29dc976... Release 0.3.8 (*)
  59e76bc... Post-release version bump to 0.3.9 (*)
  3e9e8d5... Bug: fix grl.fetch() parameter order in lua plugins (*)
  d9839d1... lua-factory: Remove metrolyrics plugin (*)
  390d03c... Update Serbian translation (*)
  ae714c9... tests: Update acoustid mock objects
  a7a75a5... acoustid: Make json result less verbose
  7d1954a... acoustid: Retrieve additional keys

(*) This commit already existed in another branch; no separate mail sent