12/06/2006: Release of version 1.0-1 as a preliminary version at the useR conference in Vienna.
15/08/2006: Version 1.0-3 submitted to CRAN for public release.
07/11/2006: Version 1.0-4 submitted to CRAN with extra widgets including rp.listbox and rp.menu 
            as well as other changes.
15/12/2008: Version 1.0-5 released.  
            Functions rp.geosim, rp.mururoa and rp.firth added. 
            rp.grid added and extended settings for pos parameter allowed. 
            Parameters hscale, vscale added to rp.tkrplot.
            Arguments mouseupfun and mousedragfun added to rp.image.
            rp.checkbox extended to multiple boxes and initialisation enabled.
            rp.textentry extended to multiple boxes.
            rp.regression, rp.likelihood, rp.logistic, rp.normal, rp.ci added.
05/10/2010: Version 1.0-6 released.  Minor changes to rp.mururoa and rp.firth.
