Added a website for the package (with pkgdown).
Added 'README.md', 'NEWS.md' and '_pkgdown.yml'.
Added some vignettes (pkgdown articles):
qualityTools package as it was removed from CRAN
(dependencies were included as internal functions in 'qualityTools.R').fdqcd(), fdqcs.depth(),fdqcs.rank(), and plot methods plot.fdqcd(), plot.fdqcs.depth(),
plot.fdqcs.rank()Added utilities for nonparametric Quality Control: npqcd(), npqcs(),
npqcs.add(), npqcs.Q(), npqcs.r(), npqcs.S(), npstate.control(), and
plot methods plot.npqcs(), plot.npqcs.Q(), plot.npqcs.r(), plot.npqcs.S().
Added utilities for parametric and nonparametric Capability Analysis: qcs.ca(),
qcs.cp(), qcs.cpn(), qcs.hat.cpm(), qcs.pcr().