Merge branch 'master' of https://github.com/worklist/hifi
Refactor/Cleanup serial interface to use vectors, correct rotation axes.  Added translation estimation for the head.
Merge branch 'master' of https://github.com/worklist/hifi
remove space at the top of PacketHeaders
parse the desired cube side length for injected audio source
Rename serialPort to serialHeadSensor, added passing of lean to eyeOffset
gyro look controls head offset on/off
Merge branch 'master' of https://github.com/worklist/hifi
Merge branch 'master' of https://github.com/worklist/hifi
change injector from cube to sphere
refactor calculations for audio
Merge remote-tracking branch 'upstream/master' into cube-injector
remove debug line from previous commit
send full quaternion orientation instead of just bearing to audio-mixer
rework audio-mixer to use orientations sent by clients
rewrite the AudioInjector to send an orientation quaternion instead of bearing
fix orientation setter in AudioInjector header
project source position onto XZ plane of listener
set injector orientation from bearing passed as command line argument
correct spatialization and off-axis attenuation for a spherical source