In open source, it's lovely, and fairly rare, to see someone pick up the ball on a quiet project, and run with it to completion without getting frustrated or losing interest first.

Geoffrey Booth — with big assists from Simon Lydell and Chris Connelly — has really gone the distance here, spending a full year working on drafts of CoffeeScript 2.0 to upgrade it from a language designed around ES3, to make it as ES6+ friendly as possible.

https://github.com/jashkenas/coffeescript/commits/master

He also redid the website and the docs for good measure: http://coffeescript.org/

Bravo.