fix otherAgent iterator in audio-mixer main
Merge pull request #151 from birarda/audio

fix for other agent iterator in audio mixer
some spacing cleanup in Audio class
correct yaw sent to audio-mixer in Audio
make the absolute head yaw getter const
Merge pull request #152 from birarda/audio

send correct avatar yaw to the audio mixer
correct the sign of the absolute head yaw sent to avatar mixer
Merge pull request #153 from birarda/audio

correct the sign of the absolute head yaw