external trackers support
tracker client lib up; torrentLength for early inited tracker client
space revert
flexible following opts.tracker
opts.trackers documentation
documentation spaces
more comments, docs fix
last version of bittorrent-tracker
Merge branch 'external_trackers_list' of https://github.com/arestov/torrent-stream into trackers
Fixed typos and docs
refactored getTracker()
added tracker tests
create new tracker on `listen()`
updated magnet-uri
following to listen port
Merge branch 'external_trackers_list' of https://github.com/arestov/torrent-stream into trackers

Conflicts:
	index.js
delay tracker creation
made tests pass with a workaround
added tests for alternate trackers
added tests for public trackers
Reformulate trackers options