[bgwhn]

I worked on this while on the Instagram Server Framework team to leverage LibCST and solve some of Instagram's own problems. We took a lot of inspiration from other lint frameworks (notably, Flake8 and ESLint).

I left the team before most of the work to open source it happened. It looks like a lot of work went into the documentation, command line interface, and configuration system. Congrats to the whole team! I hope this can be useful to other projects outside of Facebook.