* base64 encoding for Buffers.
* Buffer support for Cipher, Decipher, Hmac, Sign and Verify
* Support for reading byte ranges from files using fs.createReadStream.
* Fix Buffer.toString() on 0-length slices. (Peter Griess)
* Cache modules based on filename rather than ID (Isaac Schlueter)
* querystring improvments (Jan Kassens, Micheil Smith)
* Support DEL in the REPL. (Jérémy Lal)
* Upgrade http-parser, upgrade V8 to 2.3.2