Faster Random

Yet another MAJOR update to faster random!

• Slime chunks will now generate exactly as they would have in vanilla minecraft. Of course, this will break your non-swamp slime farms in Faster Random 4.1.0 and below if you're unlucky. Stay on that version if you don't want this change.

• Merged Pull Request #53, which on the user end changes the error pop-up.

Of course, if anything seems off, please make an issue on the issue tracker to help out!