When working with the rsample package, a simple recipe must be
prepared using the prep function first. When using recipes with
rsample it is helpful to have a function that can prepare a recipe
across a series of split objects that are produced in this package.
prepper is a wrapper function around prep() that can be used to do this.
See the vignette on "Recipes and rsample" for an example.
Details
prepper() sets the underlying prep() argument fresh to TRUE.
