gaussratiovegind 3.0.0

• The dnormratio(), pnormratio() and rnormratio() functions now work with the probability density function and cumulative distribution of the ratio of two independent or correlated Gaussian variables (in the former versions of gaussratiovegind, it was only independent variables).
• The estparnormratio() function now allows the estimation of the parameters of the distribution of the ratio of two independent or correlated Gaussian variables. A logical argument indep allows to indicate if the variables are to be considered independent or correlated.
• The estparnormratio(), estparEM() and estparVB() functions take new arguments display, graph.
• Added a NEWS.md file to track changes to the package.