v0.1.6

• Fixed testthat preparation for plot_cv(), plot_obs(), and plot_predict() to remove "Warning message: In graphics::par(op): calling par(new=TRUE) with no plot"
• Removed parallel tests in testthat for lrren() and perlrren() as there is a known error with makePSOCKcluster() in R version > 4.0.0 (created error only in r-patched-solaris-x86 and r-release-macos-x86_64).
• Updated URLs in envi-package.Rd
• Updated year in DESCRIPTION

Preparing v0.1.3 for CRAN submission

Changed examples for plot_cv(), plot_obs(), plot_perturb(), and plot_predict() to be fully interactive

Changed \donttest{} back to if(interactive()){} but with full examples for generating inputs from the lrren() and perlrren() functions