Version 2.7: 2014-07-13    o Version 2.7 released.
                           o Other minor bug fixes: R (>= 3.0.0).
						   
Version 2.6: 2014-05-04    o Version 2.6 released.
                           o Addition a new type of SDE "Stratonovich" of "snssde1d", "snssde2d" and "snssde3d" functions.
                           o Addition a new numerice methods "Runge-Kutta Order 1 and 2" add in "snssde1d", "snssde2d" and "snssde3d" functions.
                           o Addition a new function "st.int".
                           o Addition a new function "fitsde".
                           o Addition a new function "fptsde" in 1,2 and 3-dim sde.
                           o Addition a new function "rsde" in 1,2 and 3-dim sde.
                           o Manual update
                           o Many help-file improvements.
                           o Other minor bug fixes: R (>= 2.15.1).

Version 2.5: 2012-06-04    o Version 2.5 released.
                           o "FBD"        : Feller Branching Diffusion.
                           o "WFD"        : Wright-Fisher Diffusion.
                           o "SLVM"       : Stochastic Lotka-Volterra Model
                           o "Sharosc"    : Stochastic harmonic oscillator. 
                           o "Sosadd"     : Stochastic oscillator with additive noise. 
                           o "Spendu"     : Stochastic pendulum. 
                           o "Srayle"     : Stochastic Rayleigh oscillator. 
                           o "SSCPP"      : Stochastic system with a cylindric phase plane. 
                           o "Svandp"     : Stochastic Van der Pol oscillator. 
                           o "Stweibull"  : Stochastic Process The Weibull Distribution. 
                           o "Stexp"      : Stochastic Process The Exponential Distribution.
                           o "Stchisq"    : Stochastic Process The (non-central) Chi-Squared Distribution.
                           o "Stbeta"     : Stochastic Process The Beta Distribution.
                           o "Stcauchy"   : Stochastic Process The Cauchy Distribution.
                           o "Stlnorm"    : Stochastic Process The Log Normal Distribution.
                           o "Stlnorm3"   : Stochastic Process The Three-Parameter Log Normal Distribution.
                           o "Stgamma3"   : Stochastic Process The Three-Parameter Gamma Distribution.
                           o "Stlgamma3"  : Stochastic Process The Log Three-Parameter Gamma Distribution.
                           o "Stweibull3" : Stochastic Process The Three-Parameter Weibull Distribution.
                           o "Stlogis"    : Stochastic Process The Logistic Distribution.    
                           o "Stllogis"   : Stochastic Process The Log Logistic Distribution.
                           o "Stllogis3"  : Stochastic Process The Three-Parameter Log Logistic Distribution.
                           o "Stgumbel"   : Stochastic Process The Gumbel Distribution.
                           o "Stgp"       : Stochastic Process The Generalized Pareto Distribution.

Version 2.2: 2012-02-13    o Version 2.2 released.
                           o Rename the default in read.xlsx, createSheet and removeSheet to
                             sheetName="Sheet1" from "Sheet 1".  This makes it consistent with
                             Excel 2007 and 2010 names of an empty workbook.


Version 2.1: 2011-11-18    o Version 2.1 released. 
                           o A new function "Appdcon" approximated the evolution conditional law a 
                             diffusion process by Euler method, Kessler s'methods and Shoji-Ozaki methods.
							 
Version 2.0: 2011-02-09    o Version 2.0 released. 
