doc: fix CHANGELOG.md on master

This patch applies the diff of CHANGELOG from v3.x branch to master,
corresponding to the 3.1.0 release.

Fixes: #2456
Fixes: #2502

PR-URL: #2513
Reviewed-By: Rod Vagg <rod@vagg.org>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>

CHANGELOG.md

@@ -1,5 +1,73 @@
 # Node.js ChangeLog
 
+## 2015-08-18, Version 3.1.0, @Fishrock123
+
+### Notable changes
+
+* **buffer**: Fixed a couple large memory leaks (Ben Noordhuis) [#2352](https://github.com/nodejs/node/pull/2352).
+* **crypto**:
+  - Fixed a couple of minor memory leaks (Karl Skomski) [#2375](https://github.com/nodejs/node/pull/2375).
+  - Signing now checks for OpenSSL errors (P.S.V.R) [#2342](https://github.com/nodejs/node/pull/2342). **Note that this may expose previously hidden errors in user code.**
+* **intl**: Intl support using small-icu is now enabled by default in builds (Steven R. Loomis) [#2264](https://github.com/nodejs/node/pull/2264).
+  - [`String#normalize()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/normalize) can now be used for unicode normalization.
+  - The [`Intl`](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Intl) object and various `String` and `Number` methods are present, but only support the English locale.
+  - For support of all locales, node must be built with [full-icu](https://github.com/nodejs/node#build-with-full-icu-support-all-locales-supported-by-icu).
+* **tls**: Fixed tls throughput being much lower after an incorrect merge (Fedor Indutny) [#2381](https://github.com/nodejs/node/pull/2381).
+* **tools**: The v8 tick processor now comes bundled with node (Matt Loring) [#2090](https://github.com/nodejs/node/pull/2090).
+  - This can be used by producing performance profiling output by running node with `--perf`, then running your appropriate platform's script on the output as found in [tools/v8-prof](https://github.com/nodejs/node/tree/master/tools/v8-prof).
+* **util**: `util.inspect(obj)` now prints the constructor name of the object if there is one (Christopher Monsanto) [#1935](https://github.com/nodejs/io.js/pull/1935).
+
+### Known issues
+
+See https://github.com/nodejs/io.js/labels/confirmed-bug for complete and current list of known issues.
+
+* Some problems with unreferenced timers running during `beforeExit` are still to be resolved. See [#1264](https://github.com/nodejs/io.js/issues/1264).
+* Surrogate pair in REPL can freeze terminal. [#690](https://github.com/nodejs/io.js/issues/690)
+* `process.send()` is not synchronous as the docs suggest, a regression introduced in 1.0.2, see [#760](https://github.com/nodejs/io.js/issues/760).
+* Calling `dns.setServers()` while a DNS query is in progress can cause the process to crash on a failed assertion. [#894](https://github.com/nodejs/io.js/issues/894)
+* `url.resolve` may transfer the auth portion of the url when resolving between two full hosts, see [#1435](https://github.com/nodejs/io.js/issues/1435).
+
+### Commits
+
+* [[`3645dc62ed`](https://github.com/nodejs/node/commit/3645dc62ed)] - **build**: work around VS2015 issue in ICU <56 (Steven R. Loomis) [#2283](https://github.com/nodejs/node/pull/2283)
+* [[`1f12e03266`](https://github.com/nodejs/node/commit/1f12e03266)] - **(SEMVER-MINOR)** **build**: intl: converge from joyent/node (Steven R. Loomis) [#2264](https://github.com/nodejs/node/pull/2264)
+* [[`071640abdd`](https://github.com/nodejs/node/commit/071640abdd)] - **build**: Intl: bump ICU4C from 54 to 55 (Steven R. Loomis) [#2293](https://github.com/nodejs/node/pull/2293)
+* [[`07a88b0c8b`](https://github.com/nodejs/node/commit/07a88b0c8b)] - **build**: update manifest to include Windows 10 (Lucien Greathouse) [#2332](https://github.com/nodejs/io.js/pull/2332)
+* [[`0bb099f444`](https://github.com/nodejs/node/commit/0bb099f444)] - **build**: expand ~ in install prefix early (Ben Noordhuis) [#2307](https://github.com/nodejs/io.js/pull/2307)
+* [[`7fe6dd8f5d`](https://github.com/nodejs/node/commit/7fe6dd8f5d)] - **crypto**: check for OpenSSL errors when signing (P.S.V.R) [#2342](https://github.com/nodejs/node/pull/2342)
+* [[`605f6ee904`](https://github.com/nodejs/node/commit/605f6ee904)] - **crypto**: fix memory leak in PBKDF2Request (Karl Skomski) [#2375](https://github.com/nodejs/node/pull/2375)
+* [[`ba6eb8af12`](https://github.com/nodejs/node/commit/ba6eb8af12)] - **crypto**: fix memory leak in ECDH::SetPrivateKey (Karl Skomski) [#2375](https://github.com/nodejs/node/pull/2375)
+* [[`6a16368611`](https://github.com/nodejs/node/commit/6a16368611)] - **crypto**: fix memory leak in PublicKeyCipher::Cipher (Karl Skomski) [#2375](https://github.com/nodejs/node/pull/2375)
+* [[`a760a87803`](https://github.com/nodejs/node/commit/a760a87803)] - **crypto**: fix memory leak in SafeX509ExtPrint (Karl Skomski) [#2375](https://github.com/nodejs/node/pull/2375)
+* [[`f45487cd6e`](https://github.com/nodejs/node/commit/f45487cd6e)] - **crypto**: fix memory leak in SetDHParam (Karl Skomski) [#2375](https://github.com/nodejs/node/pull/2375)
+* [[`2ff183dd86`](https://github.com/nodejs/node/commit/2ff183dd86)] - **doc**: Update FIPS instructions in README.md (Michael Dawson) [#2278](https://github.com/nodejs/node/pull/2278)
+* [[`6483bc2e8f`](https://github.com/nodejs/node/commit/6483bc2e8f)] - **doc**: clarify options for fs.watchFile() (Rich Trott) [#2425](https://github.com/nodejs/node/pull/2425)
+* [[`e76822f454`](https://github.com/nodejs/node/commit/e76822f454)] - **doc**: multiple documentation updates cherry picked from v0.12 (James M Snell) [#2302](https://github.com/nodejs/io.js/pull/2302)
+* [[`1738c9680b`](https://github.com/nodejs/node/commit/1738c9680b)] - **net**: ensure Socket reported address is current (Ryan Graham) [#2095](https://github.com/nodejs/io.js/pull/2095)
+* [[`844d3f0e3e`](https://github.com/nodejs/node/commit/844d3f0e3e)] - **path**: use '===' instead of '==' for comparison (Sam Stites) [#2388](https://github.com/nodejs/node/pull/2388)
+* [[`7118b8a882`](https://github.com/nodejs/node/commit/7118b8a882)] - **path**: remove dead code in favor of unit tests (Nathan Woltman) [#2282](https://github.com/nodejs/io.js/pull/2282)
+* [[`34f2cfa806`](https://github.com/nodejs/node/commit/34f2cfa806)] - **src**: better error message on failed Buffer malloc (Karl Skomski) [#2422](https://github.com/nodejs/node/pull/2422)
+* [[`b196c1da3c`](https://github.com/nodejs/node/commit/b196c1da3c)] - **src**: fix memory leak in DLOpen (Karl Skomski) [#2375](https://github.com/nodejs/node/pull/2375)
+* [[`d1307b2995`](https://github.com/nodejs/node/commit/d1307b2995)] - **src**: don't use fopen() in require() fast path (Ben Noordhuis) [#2377](https://github.com/nodejs/node/pull/2377)
+* [[`455ec570d1`](https://github.com/nodejs/node/commit/455ec570d1)] - **src**: rename Buffer::Use() to Buffer::New() (Ben Noordhuis) [#2352](https://github.com/nodejs/node/pull/2352)
+* [[`fd63e1ce2b`](https://github.com/nodejs/node/commit/fd63e1ce2b)] - **src**: introduce internal Buffer::Copy() function (Ben Noordhuis) [#2352](https://github.com/nodejs/node/pull/2352)
+* [[`5586ceca13`](https://github.com/nodejs/node/commit/5586ceca13)] - **src**: move internal functions out of node_buffer.h (Ben Noordhuis) [#2352](https://github.com/nodejs/node/pull/2352)
+* [[`bff9bcddb6`](https://github.com/nodejs/node/commit/bff9bcddb6)] - **src**: plug memory leaks (Ben Noordhuis) [#2352](https://github.com/nodejs/node/pull/2352)
+* [[`ccf12df4f3`](https://github.com/nodejs/node/commit/ccf12df4f3)] - **(SEMVER-MINOR)** **src**: add total_available_size to v8 statistics (Roman Klauke) [#2348](https://github.com/nodejs/io.js/pull/2348)
+* [[`194eeb841b`](https://github.com/nodejs/node/commit/194eeb841b)] - **test**: drop Isolate::GetCurrent() from addon tests (Ben Noordhuis) [#2427](https://github.com/nodejs/node/pull/2427)
+* [[`46cdb2f6e2`](https://github.com/nodejs/node/commit/46cdb2f6e2)] - **test**: lint addon tests (Ben Noordhuis) [#2427](https://github.com/nodejs/node/pull/2427)
+* [[`850c794882`](https://github.com/nodejs/node/commit/850c794882)] - **test**: refactor test-fs-watchfile.js (Rich Trott) [#2393](https://github.com/nodejs/node/pull/2393)
+* [[`a3160c0a33`](https://github.com/nodejs/node/commit/a3160c0a33)] - **test**: correct spelling of 'childProcess' (muddletoes) [#2389](https://github.com/nodejs/node/pull/2389)
+* [[`e51f90d747`](https://github.com/nodejs/node/commit/e51f90d747)] - **test**: option to run a subset of tests (João Reis) [#2260](https://github.com/nodejs/io.js/pull/2260)
+* [[`cc46d3bca3`](https://github.com/nodejs/node/commit/cc46d3bca3)] - **test**: clarify dropMembership() call (Rich Trott) [#2062](https://github.com/nodejs/io.js/pull/2062)
+* [[`0ee4df9c7a`](https://github.com/nodejs/node/commit/0ee4df9c7a)] - **test**: make listen-fd-cluster/server more robust (Sam Roberts) [#1944](https://github.com/nodejs/io.js/pull/1944)
+* [[`cf9ba81398`](https://github.com/nodejs/node/commit/cf9ba81398)] - **test**: address timing issues in simple http tests (Gireesh Punathil) [#2294](https://github.com/nodejs/io.js/pull/2294)
+* [[`cbb75c4f86`](https://github.com/nodejs/node/commit/cbb75c4f86)] - **tls**: fix throughput issues after incorrect merge (Fedor Indutny) [#2381](https://github.com/nodejs/node/pull/2381)
+* [[`94b765f409`](https://github.com/nodejs/node/commit/94b765f409)] - **tls**: fix check for reused session (Fedor Indutny) [#2312](https://github.com/nodejs/io.js/pull/2312)
+* [[`e83a41ad65`](https://github.com/nodejs/node/commit/e83a41ad65)] - **tls**: introduce internal `onticketkeycallback` (Fedor Indutny) [#2312](https://github.com/nodejs/io.js/pull/2312)
+* [[`fb0f5d733f`](https://github.com/nodejs/node/commit/fb0f5d733f)] - **(SEMVER-MINOR)** **tools**: run the tick processor without building v8 (Matt Loring) [#2090](https://github.com/nodejs/node/pull/2090)
+* [[`7606bdb897`](https://github.com/nodejs/node/commit/7606bdb897)] - **(SEMVER-MINOR)** **util**: display constructor when inspecting objects (Christopher Monsanto) [#1935](https://github.com/nodejs/io.js/pull/1935)
+
 ## 2015-08-04, Version 3.0.0, @rvagg
 
 ### Notable changes