Version 0.2.1
- Fixed a bug on the calculation of rate of change in
plot.mcsimres() and added option for an user defined rate
of change formula. 
Version 0.2.0
- Fixed bug on logistic growth model plot function
 
- Fixed bug on prior definition for exponential growth model
 
- Added NEW double exponential model and related plot function
 
- Added NEW Monte-Carlo simulation function
 
- Updated parameter initialisation routine in all model. Initial
values for MCMC are drawn from the prior distribution.
 
Version 0.1.4
- Fixed bug caused by changes in nimble v.1.2.0. . # Version
0.1.3
 
- Fixed bug related to floating point arithmetic in
createProbMat() affecting some OS/Processor. 
Version 0.1.2