0.6 (04.09.2013)
	Added functions xl.read.file, xl.save.file
	Added filename argument in current.graphics
0.5.5 (12.04.2013)
	Compatibilty fix for R3.0 release 
0.5.4 (13.08.2012) 
	current.graphics now insert picture instead of link to the file
	aaa[condition,new.var]=data   now works properly
0.5 (19.11.2011)
	initial release 

