Node v5.5.0 （稳定版）发布

Node v5.5.0 （稳定版）发布，此版本的更新内容如下：

events: make sure console functions exist (Dave) #4479
fs: add autoClose option to fs.createWriteStream (Saquib) #3679
http: improves expect header handling (Daniel Sellers) #4501
node: allow preload modules with -i (Evan Lucas) #4696
v8,src: expose statistics about heap spaces (v8.getHeapSpaceStatistics()) (Ben Ripkens)#4463
Minor performance improvements:
- (Mistakenly missing from v5.4.0)
- lib: Use arrow functions instead of bind where possible (Minwoo Jung) #3622.
- module: cache stat() results more aggressively (Ben Noordhuis) #4575
- querystring: improve parse() performance (Brian White) #4675

Surrogate pair in REPL can freeze terminal. #690
Calling dns.setServers() while a DNS query is in progress can cause the process to crash on a failed assertion. #894
url.resolve may transfer the auth portion of the url when resolving between two full hosts, see #1435.
Unicode characters in filesystem paths are not handled consistently across platforms or Node.js APIs. See #2088, #3401 and #3519.