Functions added without declaring dependencies

[Henry-DJPR]

I keep finding a bunch of functions without either namespace prefixes (e.g. dplyr::mutate) or being imported to the package namespace (usethis::use_import_from). Without these, tests will fail and the app will not work when deployed. The latest issue I've found is missing lubricate dependencies in vis_bop.R. If you need to use infix operators, please either import them like we import the magrittr pipe or like so lubridate::`%m-%`(a, b)