simukde 1.1.0

• Added a NEWS.md file to track changes to the package.
• The field ByteCompile was added into DESCRIPTION file with the value true.
• Added input validations for the argument distr.
• Supported more instrumental distributions hereto: Gamma, Cauchy, Log Normal, Weibull.
• Imported the package MASS.
• Added some tests for newly added instrumental distributions.
• Added data validation for the chosen distribution by the argument distr.
• Added the function find_best_fit for finding the best fitting instrumental univariate continuous distribution easily.
• Suggested the package datasets.
• Added an example for the function simulate_kde.
• Added some tests for the new function find_best_fit.