Documentation: Use Pydoc

[thodrek]

https://docs.python.org/3/library/pydoc.html

[thodrek]

@j48zheng Is this done? If so @josmcg @JVonderwell please review the documentation.

[j48zheng]

Benefit: Readability and maintainability Cost: Approximately 3-4 hours to go through source code to add pydoc statements