rsample 0.0.2

• initial_split, training, and testing were added to do training/testing splits prior to resampling.
• Another resampling method, group_vfold_cv, was added.
• caret2rsample and rsample2caret can convert rset objects to those used by caret::trainControl and vice-versa.
• A function called form_pred can be used to determine the original names of the predictors in a formula or terms object.
• A vignette and a function (prepper) were included to facilitate using the recipes with rsample.
• A gather method was added for rset objects.
• A labels method was added for rsplit objects. This can help identify which resample is being used even when the whole rset object is not available.
• A variety of dplyr methods were added (e.g. filter, mutate, etc) that work without dropping classes or attributes of the rsample objects.

rsample 0.0.1 (2017-07-08)

Initial public version on CRAN