dplyr (>= 0.7.5), rlang (>= 0.2.1), forcats, stringr, tidyr,
magrittr, tidyxl, readxl, tibble
dplyr (>= 0.8.4), rlang (>= 0.2.1), forcats, stringr, tidyr,
magrittr, tidyxl, readxl, tibble
knitr, rmarkdown, testthat (>= 2.1.0), covr