Node.js 4.0.0

- child_process: `ChildProcess.prototype.send()` and `process.send()` operate asynchronously across all platforms (Ben Noordhuis). - node: Rename "io.js" code to "Node.js" (cjihrig). - node-gyp: updated version that works with all versions of Node.js and io.js (Rod Vagg). - npm: Upgrade to version 2.14.2 from 2.13.3, includes a security update (Kat Marchán). - timers: Improved timer performance from porting the 0.12 implementation, plus minor fixes (Jeremiah Senkpiel, Julien Gilli). - util: The `util.is*()` functions have been deprecated (Sakthipriyan Vairamani). - v8: Upgrade to version 4.5.103.30 from 4.4.63.30 (Ali Ijaz Sheikh). - Implement new `TypedArray` prototype methods: `copyWithin()`, `every()`, `fill()`, `filter()`, `find()`, `findIndex()`, `forEach()`, `indexOf()`, `join()`, `lastIndexOf()`, `map()`, `reduce()`, `reduceRight()`, `reverse()`, `slice()`, `some()`, `sort()`. - Implement new `TypedArray.from()` and `TypedArray.of()` functions. - Implement arrow functions.