UI indicates how many people are streaming

see #262
remove dotted outline of links. closes #286
remove stray console.log statement
rename the Upload tab to the Import tab

change 'u' keyboard shortcut to 'i'
organize README
automatically pause when last streamer disconnects

(and hardware playback is off)
closes #287
client: send auth first thing

fixes ability to remove "read" permission from default permissions.
client: update auto queue text
update connect-static to 1.2.0
depend on ytdl-core instead of ytdl
update findit to 2.0.0, handle library scan errors correctly.

closes #293
add a groovebasin binary
streaming improvements

 * increase encoded audio buffer size from 16KB to 128KB
   - should prevent stream hang when busy indexing
 * emit 'seek' after flushing buffers instead of before
   - should fix glitch sound when seeking
 * flushEncodedQueue timeout set to 100ms instead of 20ms
   - should use slightly less CPU

See #294
update dependencies
use ytdl.downloadFromInfo to save a duplicate request
client: hide playlists tab since the functionality is incomplete
Release 1.2.0
update logo in readme
fix changelog formatting
fix bad version locking for ytdl-core