rsample 1.1.1

• All grouped resampling functions (group_vfold_cv(), group_mc_cv(), group_initial_split() and group_validation_split(), and group_bootstraps()) now support stratification. Strata must be constant within each group (@mikemahoney218, #317, #360, #363, #364, #365).

• Added a new function, clustering_cv(), for blocked cross-validation in various predictor spaces. This is a very flexible function, taking arguments to both distance_function and cluster_function, allowing it to be used for spatial clustering as well as potentially phylogenetic and other forms of clustering (@mikemahoney218, #351).

• bootstraps() and group_bootstraps() now warn if resampling returns any empty assessment sets. Previously, bootstraps() was silent while group_bootstraps() errored (@mikemahoney218, #356, #357).

• The assessment set of validation_time_split() now also contains the lagged observations (#376).

• The new helper get_rsplit() lets you conveniently access the rsplit objects inside an rset objects (@mikemahoney218, #399).

• The result of initial_time_split() now has its own subclass "initial_time_split", in addition to existing classes (#397).

• The dependency on the ellipsis package has been removed (#393).

• Removed an overly strict test in preparation for dplyr 1.1.0 (#380).