What's new in the WebKitGTK 2.52.1 release?
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  - Reduce the amount of useless MPRIS notifications produced by MediaSesion
    when the information about media being played is incomplete.
  - Support turning off USE_GSTREAMER to configure the build with all multimedia
    features disabled.
  - Add Sysprof marks for mouse events.
  - Fix MediaSession icon for iheart.com not being displayed.
  - Fix the build with USE_GSTREAMER_GL disabled.
  - Fix the build with librice version 0.3.0 or newer.
  - Fix several crashes and rendering issues.
  - Translation updates: Georgian.