2018-09-11, Version 8.12.0 'Carbon' (LTS)

Notable Changes:

* async_hooks:
  - rename PromiseWrap.parentId (Ali Ijaz Sheikh)
    https://github.com/nodejs/node/pull/18633
  - remove runtime deprecation (Ali Ijaz Sheikh)
    https://github.com/nodejs/node/pull/19517
  - deprecate unsafe emit{Before,After} (Ali Ijaz Sheikh)
    https://github.com/nodejs/node/pull/18513
* cluster:
  - add cwd to cluster.settings (cjihrig)
    https://github.com/nodejs/node/pull/18399
  - support windowsHide option for workers (Todd Wong)
    https://github.com/nodejs/node/pull/17412
* crypto:
  - allow passing null as IV unless required (Tobias Nießen)
    https://github.com/nodejs/node/pull/18644
* deps:
  - upgrade npm to 6.2.0 (Kat Marchán)
    https://github.com/nodejs/node/pull/21592
  - upgrade libuv to 1.19.2 (cjihrig)
    https://github.com/nodejs/node/pull/18918
  - Upgrade node-inspect to 1.11.5 (Jan Krems)
    https://github.com/nodejs/node/pull/21055
* fs,net:
  - support as and as+ flags in stringToFlags() (Sa...