v0.8.0

• Added the use_track_start_timestamp option, allowing tracks to be recorded with a timestamp
  of when the track started playing, instead of submission time

  • This currently only works for Last.fm, but may be added for ListenBrainz in in the future as well

• Allow overriding config options with environment variables. Currently supported options:

  Option	Environment variable
  lastfm-key, lastfm-secret	LASTFM_KEY, LASTFM_SECRET
  listenbrainz-token	LISTENBRAINZ_TOKEN
  min-play-time	MIN_PLAY_TIME
  filter-script	FILTER_SCRIPT
  use-track-start-timestamp	USE_TRACK_START_TIMESTAMP

  Not supported: player-whitelist, [[listenbrainz]]

• Added the config subcommand to show the effective config

• Updated dependencies