"as of June 2015 the spec for ES6/ES2015 has been approved. Following the new annual release cycle, ES7/ES2016 has been adopted in June 2016. See the ECMAScript 2016 Language Specification at Ecma International."
immediately makes the page lose credibility.
So does unanswered pull requests and issues.
If it's welcome, I'd be glad to help update, as this is a great initiative, but not sure whether this is active or not...
Let me know. Cheers.