Replace Sphinx with MkDocs for Documentation
Currently we use Sphinx to generate our documentation, but we believe MkDocs should be easier to use and deploy. Not only does MkDocs seem cleaner to use and appears to have less overhead, but the documentation pages can be written in markdown format (.md) rather than rich structured text format (.rst), which is a lot more familiar for most developers (GitHub/GitLab text boxes support Markdown!).