broom.helpers 1.20.0

New supported models

• improved support for VGAM::vglm() and VGAM::vgam() models, see the
  experimental tidier tidy_vgam() (#253)

New features

• new tidy_group_by() function to indicate how to group results (#288)
• new arguments group_by and group_labels for tidy_plus_plus() (#288)

Deprecated functions

• .select_to_varnames(), .formula_list_to_named_list(),
  .generic_selector() and .is_selector_scoped() are now hard deprecated.