Experimental support for chunk cache.

[nsg]

(with bugs)

[nsg]

It will make a folder in pwd called cache. It looks like I have a few bugs with the positions as well, have a few floating chunks :)

[petterarvidsson]

Cool!

[petterarvidsson]

@nsg I also have the floating chunks syndrome, but I can not really see anything wrong with the code. Other than it is looking very very promising!

[nsg]

@petterarvidsson I was hoping that you would see an obvious error :) Well, I guess I will take a break and try to figure it out later with a fresh mind and see if I understand the problem :)