Better documentation/Comments

[zoetalus]

I need to create a writeup that explains the multi-processing architecture (I have a few diagrams floating around somewhere...)

I also need to add more comments explaining step-by-step how/what/why/etc.

[zoetalus]

https://dataleek.io/index.php/2018/05/08/speed-snakes-leveraging-parallelism-with-python/ talks about this a bunch