tibble, pillar, dplyr, tidyr, testthat, knitr, rmarkdown
pillar, dplyr (>= 1.0.0), vctrs (>= 0.3.1), tidyr, testthat,
knitr, rmarkdown
dplyr (>= 1.0.0), vctrs (>= 0.5.0), tidyr, pillar, ggplot2 (>
3.2.1), testthat, vdiffr, knitr, rmarkdown