* Upgrade V8 to 3.9.24.7

* Upgrade npm to 1.1.15

* Handle Emoji characters properly (Erik Corry, Bert Belder)

* readline: migrate ansi/vt100 logic from tty to readline (Nathan Rajlich)

* readline: Fix multiline handling (Alex Kocharin)

* add a -i/--interactive flag to force the REPL (Nathan Rajlich)

* debugger: add breakOnException command (Fedor Indutny)

* cluster: kill workers when master dies (Andreas Madsen)

* cluster: add graceful disconnect support (Andreas Madsen)

* child_process: Separate 'close' event from 'exit' (Charlie McConnell)

* typed arrays: add Uint8ClampedArray (Mikael Bourges-Sevenier)

* buffer: Fix byte alignment issues (Ben Noordhuis, Erik Lundin)

* tls: fix CryptoStream.setKeepAlive() (Shigeki Ohtsu)

* Expose http parse error codes (Felix Geisendörfer)

* events: don't delete the listeners array (Ben Noordhuis, Nathan Rajlich)

* process: add process.config to view node's ./configure settings (Nathan Rajlich)

* process: process.execArgv to see node's arguments (Micheil Smith)

* process: fix process.title setter (Ben Noordhuis)

* timers: handle negative or non-numeric timeout values (Ben Noordhuis)