I've updated the thread with the new 0.2.1 version, with most of the bugs reported here fixed, and mouse movement. Just so the demo version isn't left in such a state while I'm working on more features. I'll update the change logs with what I fixed and what's coming next.
Not sure how does updating a game works here, from what I read I need to report a new version for the moderators, but apparently that's so they can promote the game again, so not needed for just a patch version