Fix bugs

[0x2A-VR]

• Allow running without VR
• Fix camera orientation at start of scene
• Check default settings (e.g., IPD)
• Disable screen mirroring
• Update readme
• Add release
• POV toggle
• Remove bloom from UI
• Disable mirrors (look for cameras like 'Mirror Refl Camera id454258)
• Show blank screen during scene transitions to prevent seizure-inducing flicker

[plasticfant]

Keep up the good work! Let us know if you need some patreon $ to boost morale