2016-12-20, Version 7.3.0 (Current)

Notable changes:

* buffer:
  - buffer.fill() now works properly for the UCS2 encoding on
    Big-Endian machines.
    (Anna Henningsen) https://github.com/nodejs/node/pull/9837
* cluster:
  - disconnect() now returns a reference to the disconnected
    worker. (Sean Villars)
    https://github.com/nodejs/node/pull/10019
* crypto:
  - The built-in list of Well-Known CAs (Certificate Authorities)
    can now be extended via a NODE_EXTRA_CA_CERTS environment
    variable. (Sam Roberts)
    https://github.com/nodejs/node/pull/9139
* http:
  - Remove stale timeout listeners in order to prevent a memory leak
    when using keep alive. (Karl Böhlmark)
    https://github.com/nodejs/node/pull/9440
* tls:
  - Allow obvious key/passphrase combinations. (Sam Roberts)
    https://github.com/nodejs/node/pull/10294
* url:
  - Including base argument in URL.originFor() to meet specification
    compliance. (joyeecheung)
    https://github.com/nodejs/node/pull/10021
  - Improve URLSearchParams to meet specification compliance.
    (Timothy Gu) https://github.com/nodejs/node/pull/9484

PR-URL: https://github.com/nodejs/node/pull/10277