The good news is that, as of April 5th, my Vive works again, which means I can finally fix all the problems people have pointed out and add some more content. Ironic that I got my replacement station the day I actually intended to release.
The bad news is that some of the changes will probably break a lot of existing stuff, so I moved the release date to June. I should have done it earlier, but apparently I was blind and didn't find the correct button to change the release date. My apologies.
A new version of the demo with an overworked magic system should be up in a couple of days.