Added chaperone profiles
Added separate supersampling sliders for applications/compositor
Added asynchronous reprojection on/off switch
Merged in Microphone Control Overlay
Added Push-to-Talk profiles
Updated to OpenVR 1.0.3
Requires at least SteamVR beta 1477423729.
not compatible with OpenGL versions >= 3.0. NVIDIA does not care, but
unfortunately AMD does.
Also tweaked some other qt & opengl settings for more pleasant visuals.