0.3.3 -> 0.3.4
	- removed $file property, using $documentURI property of the DOM document and file() method instead
	- the code was refactored
	- most of the static methods was converted to private and protected

0.3.2 -> 0.3.3
	- added __toString() magic method
	- added html() method
	- renamed saveXML() to xml()
	
0.3.1 -> 0.3.2
	- added $whitespace static property.
	- changes in format() method
	- removed $format property
	
0.3.0 -> 0.3.1
	- fixed small typo (comparison with '$null' instead of 'null') in qJerry::create()
	- fixed call of user function in filter()
	- added map() method (jQuery)
	- added closest() method (jQuery 1.3)
	- added encoding() method
	- added doctype() method