More bugs

Fixed light source problems, but found four bugs. They should be easy to fix. There are many things I would want to add in this release, but I have to get this ready soon. Oh, another thing, I got my old job back and it starts next week. Bugger! Good thing is that I get more money to buy guitar gear, but it takes some energy and time away from roguelike programming. Anyway, I'm going to set up gcc development environment at work so I can do some development while at work. It works pretty well, because my job is often projects I have to do in certain time limit and then I have some spare time to use.