testthat, lubridate, knitr, rmarkdown, purrr, dplyr, stringi
testthat, lubridate, knitr, rmarkdown, purrr, dplyr, stringi,
stringr, devtools, covr
testthat, lubridate, knitr, rmarkdown, purrr, dplyr, stringi,
stringr, devtools, covr, bit64