switch to one channel from PortAudio to resolve USB error
Merge pull request #871 from birarda/master

fix for logitech USB reporting only one channel
Several VoxelSystems can have different view frustum
Merge pull request #874 from Atlante45/master

Several VoxelSystems can have different view frustum
Merge branch 'master' of https://github.com/worklist/hifi into animation_server_jurisdictions