Merge pull request #230 from birarda/master

fix audio mixer loopback
Merge pull request #231 from birarda/master

fix loopback from audio mixer
Merge pull request #232 from birarda/master

variable fixes for audio mixer loopback
Merge pull request #233 from birarda/master

spacing cleanup
Merge pull request #234 from birarda/master

fix other avatar unpacking from avatar mixer bulk packet
Merge pull request #235 from birarda/master

fix bytes read per avatar due to inclusion of agent ID
Merge pull request #236 from birarda/master

ground eve
add debugging output and value change for off-axis
fix order of angle calculations
fix for bearingRelativeAngleToSource breaking spatialised audio
Merge pull request #238 from birarda/off-axis

exaggerate the off-axis effect, fix double variable declaration
remove the serial interface close in destructor, incorrect solution