io.js 2.3.1 发布，值得关注的更新内容：
module: The number of syscalls made during a require() have been significantly reduced again (see #1801 from v2.2.0 for previous work), which should lead to a performance improvement (Pierre Inglebert) #1920.
npm:
Upgrade to v2.11.2 (Rebecca Turner) #1956.
Upgrade to v2.11.3 (Forrest L Norvell) #2018.
zlib: A bug was discovered where the process would abort if the final part of a zlib decompression results in a buffer that would exceed the maximum length of 0x3fffffff bytes (~1GiB). This was likely to only occur during buffered decompression (rather than streaming). This is now fixed and will instead result in a thrown RangeError (Michaël Zasso) #1811.
IO.js 是为 V8 引擎编写的基于事件 IO 的实现。
构建要求：
* `gcc` and `g++` 4.8 or newer, or
* `clang` and `clang++` 3.3 or newer
* Python 2.6 or 2.7
* GNU Make 3.81 or newer
* libexecinfo (FreeBSD and OpenBSD only)
软件详情：https://github.com/nodejs/io.js/blob/master/CHANGELOG.md
下载地址：https://github.com/nodejs/io.js/archive/v2.3.1.zip
来自:开源中国社区
