news: Add consume and single commands

NEWS

@@ -36,6 +36,9 @@ ver 0.15 (200?/??/??)
   - "playlistinfo" supports a range now
   - added "sticker database", command "sticker", which allows clients
      to implement features like "song rating"
+  - added "consume" command which removes a song after play
+  - added "single" command, if activated, stops playback after current song or
+     repeats the song if "repeat" is active.
 * Rewritten mixer code to support multiple mixers
 * Add audio archive extraction support:
   - bzip2