25 May 2016 [Stage 4] Per May 2016 TC39 consensus, String#{padStart,padEnd} is now stage 4! by ljharb · Pull Request #581 · tc39/ecma262
21 Apr 2016 tc39/proposal-ptc-syntax: Discussion and specification for an explicit syntactic opt-in for Tail Calls.
17 Apr 2016 Normalize TypedArray, ArrayBuffer and DataView constructors by leobalter · Pull Request #410 · tc39/ecma262
15 Apr 2016 Response to the proposal to add explicit tail call syntax to ECMAScript · Issue #535 · tc39/ecma262
30 Mar 2016 [Normative] Add Object.values and `Object.entries by ljharb · Pull Request #502 · tc39/ecma262