Elo implementation with a sklearn interface

[mbhynes]

Hi @rshk, Thanks for sharing this repo under a public license! If you're still actively using an elo rating system in your work, I wanted to share another implementation with a sklearn interface for a data science/ML workflow: https://github.com/mbhynes/skelo. Feel free to take a look and lmk if it fits into any of your use cases. Cheers