06-30-2012: Version 0.4-3
	* fixed the vignette dependency on xtable
	* fixed the \usage section for plot.raggr
	
01-23-2011: Version 0.4-2
	* made clValid a required package

03-30-2010: Version 0.4-1
	* changed the email address to gmail
	* fixed an issue with a list that had the same weights for all elements

02-05-2009: Version 0.3-1

	* simulation part of the CE algorithm coded in C.
	* Spearman distance coded in C.

9-19-2008: Version 0.2-1

	* Genetic Algorithm added.
	* print and plot functions added for nicely formatted output.
	* convergence monitoring plot added.

7-15-2007: Version 0.1-1

	* The first version of the package created. 
	* Cross-Entropy Monte Carlo algorithm provided.