Version 0.0.7

   o fixed some bugs

Version 0.0.6

   o fixed some bugs
   o extended to handle binomial distribution

Version 0.0.5

   o fixed some bugs

Version 0.0.4

   o fixed some bugs

Version 0.0.3

   o implementing plot and summary functions

Version 0.0.2

   o improvement of the examples

Version 0.0.1

   o package release on GitHub.