Thank you to @italoacasas for preparing the majority of this release.
### Notable changes
* **buffer**:
- buffer.fill() now works properly for the UCS2 encoding on Big-Endian machines. (Anna Henningsen) [#9837](https://github.com/nodejs/node/pull/9837)
* **cluster**:
- disconnect() now returns a reference to the disconnected worker. (Sean Villars) [#10019](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) [#9139](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) [#9440](https://github.com/nodejs/node/pull/9440)
- Including base argument in URL.originFor() to meet specification compliance. (joyeecheung) [#10021](https://github.com/nodejs/node/pull/10021)
- Improve URLSearchParams to meet specification compliance. (Timothy Gu) [#9484](https://github.com/nodejs/node/pull/9484)
### Commits
* [[`c2cc11b3c6`](https://github.com/nodejs/node/commit/c2cc11b3c6)] - Working on v7.2.2 (Jeremiah Senkpiel) [#10127](https://github.com/nodejs/node/pull/10127)
* [[`6963e8aa9d`](https://github.com/nodejs/node/commit/6963e8aa9d)] - **(SEMVER-MINOR)** **crypto**: allow adding extra certs to well-known CAs (Sam Roberts) [#9139](https://github.com/nodejs/node/pull/9139)
* [[`7c3d280bf0`](https://github.com/nodejs/node/commit/7c3d280bf0)] - **doc**: rework tls for accuracy and clarity (Sam Roberts) [#9800](https://github.com/nodejs/node/pull/9800)
* [[`6b98906a08`](https://github.com/nodejs/node/commit/6b98906a08)] - **doc**: document R CRAN mirror process (Lucas Holmquist) [#10211](https://github.com/nodejs/node/pull/10211)
* [[`7e8c5e3490`](https://github.com/nodejs/node/commit/7e8c5e3490)] - **doc**: expand common module material in test guide (Rich Trott) [#10251](https://github.com/nodejs/node/pull/10251)
* [[`ee736b276c`](https://github.com/nodejs/node/commit/ee736b276c)] - **doc**: fix broken link in COLLABORATOR_GUIDE.md (Michael Dawson) [#10267](https://github.com/nodejs/node/pull/10267)
* [[`40b0ca1329`](https://github.com/nodejs/node/commit/40b0ca1329)] - **doc**: fix typo in code example of 'path' module (pallxk) [#10136](https://github.com/nodejs/node/pull/10136)
* [[`b44e7891d0`](https://github.com/nodejs/node/commit/b44e7891d0)] - **doc**: standardizing on make -j4 (Jonathan Darling) [#9961](https://github.com/nodejs/node/pull/9961)
* [[`ff8fdb14fb`](https://github.com/nodejs/node/commit/ff8fdb14fb)] - **doc**: add note to parallelize make (Jonathan Darling) [#9961](https://github.com/nodejs/node/pull/9961)
* [[`20fdf3aec6`](https://github.com/nodejs/node/commit/20fdf3aec6)] - **doc**: add some info on `tty#setRawMode()` (Jeremiah Senkpiel) [#10147](https://github.com/nodejs/node/pull/10147)
* [[`30340388f1`](https://github.com/nodejs/node/commit/30340388f1)] - **doc**: add a variable declaration in the buffer.md (Vse Mozhet Byt) [#9795](https://github.com/nodejs/node/pull/9795)
* [[`d64e52c68d`](https://github.com/nodejs/node/commit/d64e52c68d)] - **doc**: adding missing - in README (Italo A. Casas) [#10170](https://github.com/nodejs/node/pull/10170)
* [[`39bf5bfaf1`](https://github.com/nodejs/node/commit/39bf5bfaf1)] - **doc**: removing extra space in README (Italo A. Casas) [#10168](https://github.com/nodejs/node/pull/10168)
* [[`bc64a63440`](https://github.com/nodejs/node/commit/bc64a63440)] - **doc**: fix a wrong note in the buffer.md (Vse Mozhet Byt) [#9795](https://github.com/nodejs/node/pull/9795)
* [[`d4c73d4823`](https://github.com/nodejs/node/commit/d4c73d4823)] - **doc**: remove an extraneous word in the buffer.md (Vse Mozhet Byt) [#9795](https://github.com/nodejs/node/pull/9795)
* [[`d373b2f2fb`](https://github.com/nodejs/node/commit/d373b2f2fb)] - **doc**: fix examples in buffer.md to avoid confusion (Vse Mozhet Byt) [#9795](https://github.com/nodejs/node/pull/9795)
* [[`7a39a44dbc`](https://github.com/nodejs/node/commit/7a39a44dbc)] - **doc**: remove a wrong remark in the buffer.md (Vse Mozhet Byt) [#9795](https://github.com/nodejs/node/pull/9795)
* [[`39b083eb51`](https://github.com/nodejs/node/commit/39b083eb51)] - **doc**: repeat a remark as needed in the buffer.md (Vse Mozhet Byt) [#9795](https://github.com/nodejs/node/pull/9795)
* [[`622690f242`](https://github.com/nodejs/node/commit/622690f242)] - **doc**: fix copy-paste artifacts in the buffer.md (Vse Mozhet Byt) [#9795](https://github.com/nodejs/node/pull/9795)
* [[`3b848a279b`](https://github.com/nodejs/node/commit/3b848a279b)] - **doc**: fix wrong function arguments in the buffer.md (Vse Mozhet Byt) [#9795](https://github.com/nodejs/node/pull/9795)
* [[`9e47b943a7`](https://github.com/nodejs/node/commit/9e47b943a7)] - **doc**: fix a syntax error in the buffer.md (Vse Mozhet Byt) [#9795](https://github.com/nodejs/node/pull/9795)
* [[`1864222d50`](https://github.com/nodejs/node/commit/1864222d50)] - **doc**: var => const/let in the buffer.md (Vse Mozhet Byt) [#9795](https://github.com/nodejs/node/pull/9795)
* [[`7b924f1713`](https://github.com/nodejs/node/commit/7b924f1713)] - **doc**: fix typo in ecdhCurve, a tls property name (Sam Roberts) [#10345](https://github.com/nodejs/node/pull/10345)
* [[`ef2fa56314`](https://github.com/nodejs/node/commit/ef2fa56314)] - **src**: fix string format mistake for 32 bit node (Alex Newman) [#10082](https://github.com/nodejs/node/pull/10082)
* [[`8a34e60b41`](https://github.com/nodejs/node/commit/8a34e60b41)] - **test**: var to const in tls-no-cert-required (Sam Roberts) [#9800](https://github.com/nodejs/node/pull/9800)
* [[`8c8b1230da`](https://github.com/nodejs/node/commit/8c8b1230da)] - **test**: use const/let and common.mustCall (Outsider) [#9959](https://github.com/nodejs/node/pull/9959)
* [[`74563f07e9`](https://github.com/nodejs/node/commit/74563f07e9)] - **test**: refactor domain test (Adao Junior) [#10269](https://github.com/nodejs/node/pull/10269)
* [[`d9cfd5484f`](https://github.com/nodejs/node/commit/d9cfd5484f)] - **test**: clean up domain-no-error-handler test (weyj4) [#10291](https://github.com/nodejs/node/pull/10291)
* [[`7f01484a7a`](https://github.com/nodejs/node/commit/7f01484a7a)] - **test**: add ES6 and strictEqual to test-fs-truncate (Adrian Estrada) [#10167](https://github.com/nodejs/node/pull/10167)
* [[`88839cf204`](https://github.com/nodejs/node/commit/88839cf204)] - **test**: replace var with const in test-require-dot (Amar Zavery) [#9916](https://github.com/nodejs/node/pull/9916)
* [[`f5347abac8`](https://github.com/nodejs/node/commit/f5347abac8)] - **test**: set stdin too for pseudo-tty tests (Anna Henningsen) [#10149](https://github.com/nodejs/node/pull/10149)
* [[`3a460d5469`](https://github.com/nodejs/node/commit/3a460d5469)] - **test**: check for error on invalid signal (Matt Phillips) [#10026](https://github.com/nodejs/node/pull/10026)
* [[`6d4f270f2f`](https://github.com/nodejs/node/commit/6d4f270f2f)] - **test**: use const and strictEqual in test-os-homedir-no-envvar (CodeVana) [#9899](https://github.com/nodejs/node/pull/9899)
* [[`62f5a0bf59`](https://github.com/nodejs/node/commit/62f5a0bf59)] - **test**: check result of uv_loop_init and uv_write (Ben Noordhuis) [#10126](https://github.com/nodejs/node/pull/10126)
* [[`01509bc67e`](https://github.com/nodejs/node/commit/01509bc67e)] - **test**: move long-running test to sequential (Rich Trott) [#10161](https://github.com/nodejs/node/pull/10161)
* [[`d8dc890352`](https://github.com/nodejs/node/commit/d8dc890352)] - **test**: assert.throws() should include a RegExp (Chris Bystrek) [#9976](https://github.com/nodejs/node/pull/9976)
* [[`6f2f02d5ad`](https://github.com/nodejs/node/commit/6f2f02d5ad)] - **test**: invalid package.json causes error when require()ing in directory (Sam Shull) [#10044](https://github.com/nodejs/node/pull/10044)
* [[`4d66578997`](https://github.com/nodejs/node/commit/4d66578997)] - **test**: use ES6 to update let & const (Jason Humphrey) [#9917](https://github.com/nodejs/node/pull/9917)
* [[`bb9174745b`](https://github.com/nodejs/node/commit/bb9174745b)] - **test**: fix test for buffer regression #649 (joyeecheung) [#9924](https://github.com/nodejs/node/pull/9924)
* [[`613798335c`](https://github.com/nodejs/node/commit/613798335c)] - **test**: stream readable resumeScheduled state (Italo A. Casas) [#10299](https://github.com/nodejs/node/pull/10299)
* [[`980acb4b95`](https://github.com/nodejs/node/commit/980acb4b95)] - **tls**: document and test option-less createServer (Sam Roberts) [#9800](https://github.com/nodejs/node/pull/9800)
* [[`41e1e6eb35`](https://github.com/nodejs/node/commit/41e1e6eb35)] - **tls**: do not refer to secureOptions as flags (Sam Roberts) [#9800](https://github.com/nodejs/node/pull/9800)
* [[`19d7197177`](https://github.com/nodejs/node/commit/19d7197177)] - **url**: add a got host pattern in url.js (Axel Monroy) [#9653](https://github.com/nodejs/node/pull/9653)
* [[`2da71f24de`](https://github.com/nodejs/node/commit/2da71f24de)] - **url, test**: fix typo in inspect output, add test (Jay Brownlee) [#10231](https://github.com/nodejs/node/pull/10231)
* [[`80cccce218`](https://github.com/nodejs/node/commit/80cccce218)] - **url, test**: including base argument in originFor (joyeecheung) [#10021](https://github.com/nodejs/node/pull/10021)