data.table, ggplot2, tibble, magrittr, grDevices
data.table, ggplot2, tibble, magrittr, grDevices, dplyr
data.table, ggplot2 (>= 3.0.0), tibble, magrittr, grDevices,
dplyr
knitr, testthat, rmarkdown, viridisLite, extrafont