v0.1.0

What works:

• Authenticate to last.fm/libre.fm using mpris-scrobbler-signon
• Scrobble to above mentioned services using mpris-scrobbler daemon

Known issues:

• We still have some leaky parts of the application:
  most importantly the API responses XML parsing and the nowplaying
  stack of events. Also coverity build fails.
• The authentication is done in two steps, it can be reduced to one, by
  moving the session initialization to the daemon.
• The logic of scrobbling from the queue is very bad so
  we sometimes end up sending the same scrobble multiple times.
• The logic of now_playing is also bad, there seem to be instances where
  we add the now_playing event at different intervals than the desired
  65 seconds. (Here maybe we can implement different intervals, per
  service, as libre.fm seems to have a different timeout than last.fm)
• The MPRIS signals sent by the players are not consistent,
  which makes me consider adding specific logic to each of them.
  Currently it works more or less correctly for Spotify.