Weather system is moving

Basic weather is done, I incidentally created an area tester that will find any rooms in an area that do not have working exits. I did this because I do not want to hand edit the weather deamon to include the locations that should be affected by weather.

I also have a cache in the weather deamon that keeps track of what rooms are loaded, this does not affect the weather daemon really but helps reduce system load. The weather will work no matter when a room is loaded or cleaned up.

But there is still much work to get all these features working flawlessly, and I will probably do some redesigning on the way. More than once.