v0.5.0

• Added support for multiple ListenBrainz instances
  • You can now specify multiple ListenBrainz instances, supporting custom installs
    and other scrobbling services that use a ListenBrainz compatible API
• Added a number of example filter scripts
• The auto-generated config file and session token file are now created with
  more restrictive permissions (0600)
• Added fallback behavior when a player does not report track length:
  • Tracks will scrobble after the default minimum track length (30 seconds)
  • Tracks will only scrobble once, unless paused and then unpaused
• Internal refactoring
• Cleaned up the README
• Documented where the session token is stored