broom, dplyr, foreach, geojsonio, leaflet, magrittr, miniUI,
purrr, readr, rgdal, shiny, sp, tibble, tidyr
dplyr, leaflet, magrittr, miniUI, purrr, purrrlyr, readr, sf,
shiny, tibble, tidyr
covr (>= 3.0.1), knitr, stringr (>= 1.2.0), testthat (>=
1.0.2), rmarkdown