Log Message:
Update to 0.10.13:

Changes since 0.10.12:

      * Latency handling infrastructure for live playback scenarios
      * State change handling changes
      * GstController property handling improved
      * Various bug fixes and improvements
      * Parallel installability with 0.8.x series
      * Threadsafe design and API

API additions since 0.10.12:

      * gst_element_change_state()
      * GST_STATE_TARGET
      * GST_BASE_TRANSFORM_LOCK/UNLOCK
      * GstClock::gst_clock_unadjust_unlocked()
      * fakesink::num-buffers property
      * GST_CORE_ERROR_DISABLED
      * basesrc::prepare_seek_segment vmethod
      * gst_buffer_try_new_and_alloc()
      * gst_buffer_copy_metadata()
      * GstBufferCopyFlags enum
      * GST_BUFFER_COPY_ALL flag
      * gst_uri_protocol_is_supported()
      * gst_base_src_query_latency()
      * GstQueue::pushing
      * gst_controller_suggest_next_sync()
      * gst_object_suggest_next_sync()
      * basesrc::unlock_stop
      * basesink::unlock_stop
      * GstBin::async-handling property
      * gst_message_new_async_start()
      * gst_message_parse_async_start()
      * gst_message_new_async_done()
      * GST_MESSAGE_ASYNC_START
      * GST_MESSAGE_ASYNC_DONE