Usage
outdated(plan = workplan(), targets = drake::possible_targets(plan),
  envir = parent.frame(), verbose = TRUE, hook = function(code) {    
  force(code) }, cache = drake::get_cache(verbose = verbose),
  parallelism = drake::default_parallelism(), jobs = 1,
  packages = rev(.packages()), prework = character(0), config = NULL)