Code Cleanup

[Arcterus]

So, because I didn't know how to use Piston very well when I first wrote this and the code is old af (for Rust code), the code is pretty messy right now. It needs to be cleaned up in a major way.

[linonetwo]

error[E0554]: #![feature] may not be used on the stable release channel
 --> src/life.rs:1:1
  |
1 | #![feature(conservative_impl_trait)]
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

can you clean up this?

[Arcterus]

The problem with that is that stuff like this would need to be changed to use Box<Iterator> rather than impl Iterator. It's not too much of an issue I suppose, but it means there would be a lot of unnecessary memory allocations.

In any case, I may change the algorithm entirely as it can get quite slow right now when there are too many blocks.