Send an explicit kill request to the avatar mixer (which will pass it along to
the other clients) when we exit.
Merge pull request #1287 from PhilipRosedale/master

Improved using faceshift to turn body
Glow/shrink avatars when killed, send kill message when we move between
domains, locations, etc.
Merge pull request #1288 from ey6es/master

Have avatars glow/shrink out of existence when they log off or move to another domain/location.
Lean drive works with keys and no up/down
Rounding numbers
Merge branch 'master' of https://github.com/worklist/hifi
Added adjustment for hydra position to user (it matters)
add a mutex lock and unlock on Menu instance creation
Merge pull request #1289 from birarda/master

add a mutex lock and unlock on Menu instance creation
Add local audio monitor option, tweak turning with head
Merge branch 'master' of https://github.com/worklist/hifi