2009-4-9 Arthur Allignol <arthur.allignol@fdm.uni-freiburg.de>

* New data set abortion
* New example in mvna help page
	
2009-1-29 Arthur Allignol <arthur.allignol@fdm.uni-freiburg.de>
	
* modification of the documentation 
w.r.t new parser	
* changes in the plot (new arguments) and xyplot (internal) method
* in mvna(): argument state.numbers changed for state.names

2008-9-15 Arthur Allignol <arthur.allignol@fdm.uni-freiburg.de>

* change in mvna to improve computation time