2016-07-14, Version 4.5.0 'Argon' (LTS)

Notable Changes:

This list is not yet complete. Please comment in the thread with
commits you think should be included. Descriptions will also be
updated in a later release candidate.

Semver Minor:

* buffer:
 * backport new buffer constructor APIs to v4.x
   (Сковорода Никита Андреевич)
   #7562
 * backport --zero-fill-buffers cli option (James M Snell)
   #5745
* build:
  * add Intel Vtune profiling support (Chunyang Dai)
    #5527
* repl:
  * copying tabs shouldn't trigger completion (Eugene Obrezkov)
    #5958
* src:
  * add node::FreeEnvironment public API (Cheng Zhao)
    #3098
* test:
  * run v8 tests from node tree (Bryon Leung)
    #4704
* V8:
  * Add post portem data to imrpove object inspection and function's
    context variables inspection (Fedor Indutny)
    #3779

Semver Patch:

* **buffer**:
  * ignore negative allocation lengths (Anna Henningsen)
    #7562
* **libuv**:
  * upgrade libuv to 1.9.1 (Saúl Ibarra Corretgé)
    #6796
  * upgrade libuv to 1.9.0 (Saúl Ibarra Corretgé)
    #5994
* **npm**:
  * upgrade to 2.15.9 (Kat Marchán)
    #7692