2017-03-08, Version 7.7.2 (Current)

Notable changes:

* doc: add `Daijiro Wachi` to collaborators (Daijiro Wachi) https://github.com/nodejs/node/pull/11676
* tty: add ref() so process.stdin.ref() etc. work (Ben Schmidt) https://github.com/nodejs/node/pull/7360
* util: fix inspecting symbol key in string (Ali BARIN) https://github.com/nodejs/node/pull/11672

PR-URL: https://github.com/nodejs/node/pull/11745