update to 0.12.1
changes:
* Removal of libgnome dependency when building with gtk+ 2.14+
* Greatly reduced memory usage when accessing Jamendo catalog
* Cover art improvements:
  - Provide cover art for all songs transferred to iPods
  - Support for transferring cover art to MTP devices
  - Cover art image widget is better behaved when resized
* Switched to decodebin2, notably allowing playback of chained ogg streams
* Better support for lossless encoded files in the UI
* Compatibility with the DeviceKit-disks gvfs volume monitor
* Some support for 'album sortname' tags
* Allow configuration of the audioscrobbler handshake URL (libre.fm)
* Improved network buffering in the crossfading player backend

(drochner)