2016-10-12, Version 6.8.0 (Current)

* fs:
  - `SyncWriteStream` now inherits from `Stream.Writable`. (Anna
Henningsen) https://github.com/nodejs/node/pull/8830
    - Practically, this means that when stdio is piped to a file,
stdout and stderr will still be `Writable` streams.
  - `fs.existsSync()` has been undeprecated. `fs.exists()` remains
deprecated. (Dan Fabulich) https://github.com/nodejs/node/pull/8364
* http: `http.request()` now accepts a `timeout` option. (Rene Weber)
https://github.com/nodejs/node/pull/8101
* module: The module loader now maintains its own realpath cache. (Anna
Henningsen) https://github.com/nodejs/node/pull/8100
* npm: Upgraded to 3.10.8 (Kat Marchán)
https://github.com/nodejs/node/pull/8706
* stream: `Duplex` streams now show proper `instanceof
Stream.Writable`. (Anna Henningsen)
https://github.com/nodejs/node/pull/8834
* timers: Improved `setTimeout`/`Interval` performance by up to 22%.
(Brian White) https://github.com/nodejs/node/pull/8661

PR-URL: https://github.com/nodejs/node/pull/9034