[gnome-games] (16 commits) Non-fast-forward update to branch wip/exalm/uid

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/uid' 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:

  fc27b1e... game: Take uid as string argument instead of Uid
  e3526df... game-thumbnail: Remove uid
  09d6886... Stop using Uid
  9909c3b... generic: Remove GenericUid
  9c2edbb... core: Remove Uid
  c5e2374... retro-runner: Simplify construction
  685fef2... retro-runner: Store game
  3ea27f9... game: Make uri a property
  42c8eef... game: Make platform a property
  135ed13... game: Make media set a property

Commits added to the branch:

  14ca082... Make Uid a class and remove GenericUid
  5409e32... game-thumbnail: Remove uid
  59139de... uid: Don't throw errors for get_uid()
  c1c98bc... retro-runner: Simplify construction
  66106a0... retro-runner: Store game
  fe37996... game: Make uid a property
  d8d5f25... game: Make uri a property
  df31dae... game: Make platform a property
  2627779... game: Make media set a property
  6cdb52d... uid: Rename get_uid() to to_string()
  d183652... uid: Add Uid.hash()
  0e733da... uid: Add Uid.equal()
  f60c9e0... game-model: Move compare func to Game
  62e6ad2... game: Use Platform.compare() instead of reinventing it
  5d96b42... platform-model: Use Platform.compare() instead of reinventi
  d8c4df9... uid: Add Uid.compare()