SteamVR build

This release adds support for Oculus Rift and HTC Vive by utilizing SteamVR instead of Microsoft's HoloToolkit. It also provides a number of bug fixes and optimizations for controllers that do not feature an analog stick.

Initial release for UWP

Initial build with support for Windows Mixed Reality headsets distributed as a UWP (Universal Windows Platform) application. Requires an advanced degree in certificate sorcery to get working.