Allowed for adding and removing tracks from Sonos queue
Added nixscripter to contacts, and cleaned up new code for new features
Had add_to_queue return the queue position of the newly added track
FEATURE: play tracks already in the queue
Changed play to play_now, to explain it has side effects
Cleaned up tabs, turned into spaces
Split off play by itself for clarity, fixed two minor bugs
FEATURE: allowed change of shuffle and repeat settings on the queue
FEATURE: clear queue: remove all tracks from the queue
FEATURE: seek to a time in a track
Typo in docstring fixed
Merge pull request #3 from nixscripter/master

Add queue management, track seek, and shuffle/repeat.