HTML5 port

The process of porting Hypothermia was a lot more involved than Gruepunk, and I must admit I'm not fully satisfied with the end result -- the smooth scene transition I was so pleased with in the original game is (at the time of writing) impossible to implement in the OpenGL renderer that HaxePunk uses, so I had to make do with an ugly fade-through-black. Hopefully in the future this can be made right.

However, the main thing is that an important piece of my history is now back online.  I'll take what I can get.