Version 0.5.0
Date 29/06/2011
Initial version

Version 0.5.1
Date 29/06/2011
Fixed some bugs and updated the vignette.

Version 0.5.2
Date 12/11/2011
Bug fixed. 

Version 0.5.3
Date 29/06/2011
updated for ggplot2 0.9
use parallel packages
renamed some functions

Version 0.5.4
Date 14/06/2014
Fixing for R3.0

Version 0.5.5
Fixing plotting feature for ggplot2 0.9
Feature for controlling seed for simulation
More flexible way to create cluster