2017-02-28, Version 7.7.0 (Current)

Notables changes:

* child_process: spawnSync() exit code now is null when the child is killed via signal (cjihrig)
[#11288](https://github.com/nodejs/node/pull/11288)
* http: new functions to access the headers for an outgoing HTTP message (Brian White)
[#11562](https://github.com/nodejs/node/pull/11562)
* lib: deprecate node --debug at runtime (Josh Gavant)
[#11275](https://github.com/nodejs/node/pull/11275)
* tls: new tls.TLSSocket() supports sec ctx options (Sam Roberts)
[#11005](https://github.com/nodejs/node/pull/11005)
* url: adding URL.prototype.toJSON support (Michaël Zasso)
[#11236](https://github.com/nodejs/node/pull/11236)
* doc: items in the API documentation may now have changelogs (Anna Henningsen)
[#11489](https://github.com/nodejs/node/pull/11489)
* crypto: adding support for OPENSSL_CONF again (Sam Roberts)
[#11006](https://github.com/nodejs/node/pull/11006)
* src: adding support for trace-event tracing (misterpoe)
[#11106](https://github.com/nodejs/node/pull/11106)

PR-URL: https://github.com/nodejs/node/pull/11553