Beta testing for first patch: v0.1.1 (Opt-in instantly!)

Our first patch for Observatory is almost entirely made of community-requested changes and fixes. Thanks for your help! We're doing a very-quick round of public testing before we set it live on the default branch.

Highlights:

• Vive controller support for music video + racer
• Optimization + big fix for audio stuttering in music video
• Fix for doubled-UI bug on certain menus for Vive More details and instant-opt-in instructions