Just an enumeration of things to do:
   * Playlist
      - Add a complete directory
      - Add drag'n drop onto the playlist
   * Manage subtitles

   * Known bugs:
      - Launch Bakaar and open the playlist. Then close the video window.
      You can see that the playlist is still open and the Bakaar process
      is still running when both windows should have been closed and the
      stopped.

Things that would be nice to have:
   * Make the player skinnable
