* **src**: Added a new `--track-heap-objects` flag to track heap object allocations for heap snapshots (Bradley Meck) [#2135](https://github.com/nodejs/io.js/pull/2135).
* **readline**: Fixed a freeze that affected the repl if the keypress event handler threw (Alex Kocharin) [#2107](https://github.com/nodejs/io.js/pull/2107).
* **npm**: Upgraded to v2.13.0, release notes can be found in <https://github.com/npm/npm/releases/tag/v2.13.0> (Forrest L Norvell) [#2152](https://github.com/nodejs/io.js/pull/2152).
### 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
* [[`f95f9ef6ea`](https://github.com/nodejs/io.js/commit/f95f9ef6ea)] - **build**: always use prefix=/ for tar-headers (Rod Vagg) [#2082](https://github.com/nodejs/io.js/pull/2082)
* [[`47e2c5c828`](https://github.com/nodejs/io.js/commit/47e2c5c828)] - **build**: bail early if clean is invoked (Johan Bergström) [#2127](https://github.com/nodejs/io.js/pull/2127)
* [[`3c4121c418`](https://github.com/nodejs/io.js/commit/3c4121c418)] - **deps**: make node-gyp work with io.js (cjihrig) [iojs/io.js#990](https://github.com/iojs/io.js/pull/990)
* [[`938cc757bb`](https://github.com/nodejs/io.js/commit/938cc757bb)] - **deps**: upgrade to npm 2.13.0 (Forrest L Norvell) [#2152](https://github.com/nodejs/io.js/pull/2152)
* [[`6f306e0ed2`](https://github.com/nodejs/io.js/commit/6f306e0ed2)] - **doc**: add targos as a collaborator (Michaël Zasso) [#2200](https://github.com/nodejs/io.js/pull/2200)
* [[`c019d9a239`](https://github.com/nodejs/io.js/commit/c019d9a239)] - **doc**: add thefourtheye as a collaborator (Sakthipriyan Vairamani) [#2199](https://github.com/nodejs/io.js/pull/2199)
* [[`4e92dbc26b`](https://github.com/nodejs/io.js/commit/4e92dbc26b)] - **doc**: add TSC members from the combined project (Jeremiah Senkpiel) [#2085](https://github.com/nodejs/io.js/pull/2085)
* [[`0ab81e6f58`](https://github.com/nodejs/io.js/commit/0ab81e6f58)] - **docs**: link to more up-to-date v8 docs (Jeremiah Senkpiel) [#2196](https://github.com/nodejs/io.js/pull/2196)
* [[`1afc0c9e86`](https://github.com/nodejs/io.js/commit/1afc0c9e86)] - **fs**: fix error on bad listener type (Brendan Ashworth) [#2093](https://github.com/nodejs/io.js/pull/2093)