GGally 2.2.0

Bug fixes

• Removed dependency on reshape2 (#475)
• Reverse ordering of y-axis in ggally_count() (#420)
• Facets ordering in ggcoef_compare() (#426)
• Fix in ggcoef_compare() when using tidy selectors for
  no_reference_row (#430)
• Fix in ggcoef_compare() regarding no_reference_row option (#430)
• Fix in ggcoef_compare() with an include argument (#447)
• New default tidier for ggcoef_model(), now using
  broom.helpers::tidy_with_broom_or_parameters() (#432)
• Re-export methods from and redirect vignettes to the {ggstats} package (#452, #457)
• Replaced ..scaled.. with after_stat(scaled) in ggscatmat (#467)