* 0.2.1 (2014-03-20)
	* New features:
		- Add web demos: long-polling.html forever-iframe.html
	Incompatible changes:
		- The data type of seq in response is changed to int(previousely string)

* 0.2.0 (2014-02-26)
	Init this file.
	* New features:
		-
	* Incompatible changes:
		-
	* Bug fixes:
		-