graphics, grDevices, plumber, segmented, stats
knitr, rmarkdown, spelling, testthat (>= 3.0.0)
ellmer, knitr, rmarkdown, spelling, testthat (>= 3.0.0),
vdiffr
ellmer, knitr, pkgload, rmarkdown, spelling, testthat (>=
3.0.0), vdiffr, WeibullR