GZ3Doom release adds positional tracking on Oculus Rift DK2

Announcing the release 1.8.6_l of GZ3Doom, a stereoscopic 3D version of GZDoom. Changes in this release include:

Position tracking works in Oculus Rift DK2
• Split hud and menus for side-by-side vr_modes 3 and 4
• Correct position tracking for yaw in DK1 and DK2
• Use Oculus SDK frame timing
• Advance to Oculus SDK 0.4.4 from 0.3.2 (no more pausing the service...)
• Enhancements to vr_mode wiki
• Correct spelling of "oculardium_optimosa" in installed Rift shortcut scripts.

Nice job, needed this for a while!