3.1.1-rc4

Windows support! #182 (big ups @mancoast)
VR support #201
Android build improvements #191
XDG base directory fix #190
Desktop files #196 #189
Qt build fixes #197 (still not all solved... help needed)
Request microphone access for macOS
Removal of presets with known problems #187 (thx @rothn !)

Please test and report any issues!