testthat, knitr, rmarkdown, lintr, covr, jpeg, bmp
testthat, knitr, rmarkdown, lintr, covr, jpeg, bmp, leaflet
testthat, knitr, rmarkdown, covr, jpeg, bmp, leaflet
bmp, jpeg, knitr, leaflet, parallel, rmarkdown, sf, testthat,
webshot