Awesome job. I'm impressed how many interesting and complex open source projects you created / contributed to. And you are only 19! What age did you start coding? And how did you learn? By yourself? Early CS degree? I'm a bit envy. Github hired you for a good reason probably. Slash looks really interesting, will keep a watch on it. I have some constructive remarks but it was all said already in other comments. Are you using it somewhere in production? What is the runtime? How is concurrency handled? Do you have performance benchmarks? Great stuff overall. Keep it up.