Changes in version 0.6.5 (2011-12-13)                  

    o   submit to CRAN on 2011-12-12

    o   fix example to adapt both released R and devel R

                 Changes in version 0.6.3 (2011-12-12)                  

    o   submit to CRAN on 2011-12-11

    o   fix example errors due to change in methods, setMethod return a 
	generator function

    o   adding Color constructor

                 Changes in version 0.6.2 (2011-10-28)                  

    o   add validObject back to active field

    o   submit to CRAN on 2011-10-27

                        Changes in version 0.5.5                        

    o   remove setProperties

    o   Adding properties function which is a old signalingFields 
	combining with signalingField

    o   Adding coerction in properties().