2011.04.22, Version 0.4.7 (stable)

* Don't emit error on ECONNRESET from read() #670

* Fix: Multiple pipes to the same stream were broken #929
  (Felix Geisendörfer)

* URL parsing/formatting corrections #954 (isaacs)

* make it possible to do repl.start('', stream) (Wade Simmons)

* Add os.loadavg for SunOS (Robert Mustacchi)

* Fix timeouts with floating point numbers #897

* Improve docs.
