0.17.3
======

A new unstable release for Rygel

Changes compared to 0.17.2:

- Really bump Vala requirement as announced in previous version.
- Remove obsolete --enable-test-plugin configure option.
- Don't run tests by default.

Server:
 - Add serialisation of containers to DIDL_S playlist format.
 - Generate thumbnails for native files only.
 - Add support for playlist items.
 - Support DIDL_S DLNA profile.

Doc:
 - Update "Implementing server plugins" docs.
 - Add "Implementing renderer" docs.
 - Some general improvements.

Tracker:
 - Fix building against recent tracker releases.

Renderer:
 - Mark some strings for translation.
 - Add PresetNameList to initial notify.
 - Set correct track numbers.
 - Support DIDL_S playlists.
 - Some state notification fixes.
 - Add GetCurrentTransportActions UPnP call.

Playbin:
 - Add 3GPP mime-type.
 - Properly query duration using DURATION_CHANGED message and really check if
   the pipeline knows its TIME and not just its size.

Examples:
 - C version of the example renderer.

Media-Export:
 - Reenable media art extraction.
 - Fix a critical on harvesting.
 - Fix an upload issue with the method to mark an item as a place-holder.
 - Support playlist items.