ggplot2 3.5.1

This is a small release focusing on fixing regressions from 3.5.0 and
documentation updates.

Bug fixes

• Fixed bug where discrete scales could not map aesthetics only consisting of
  NAs (#5623)
• Fixed spurious warnings from sec_axis() with breaks = NULL (#5713).
• Patterns and gradients are now also enabled in geom_sf()
  (@teunbrand, #5716).
• The default behaviour of resolution() has been reverted to pre-3.5.0
  behaviour. Whether mapped discrete vectors should be treated as having
  resolution of 1 is controlled by the new discrete argument.
• Fixed bug in guide_bins() and guide_coloursteps() where discrete breaks,
  such as the levels produced by cut(), were ordered incorrectly
  (@teunbrand, #5757).

Improvements

• When facets coerce the faceting variables to factors, the 'ordered' class
  is dropped (@teunbrand, #5666).
• coord_map() and coord_polar() throw informative warnings when used
  with the guide system (#5707).
• When passing a function to stat_contour(breaks), that function is used to
  calculate the breaks even if bins and binwidth are missing
  (@teunbrand, #5686).
• geom_step() now supports lineend, linejoin and linemitre parameters
  (@teunbrand, #5705).
• Fixed performance loss when the .data pronoun is used in aes() (#5730).
• Facet evaluation is better at dealing with inherited errors
  (@teunbrand, #5670).
• stat_bin() deals with non-finite breaks better (@teunbrand, #5665).
• While axes in coord_radial() don't neatly fit the top/right/bottom/left
  organisation, specifying position = "top" or position = "right"
  in the scale will flip the placement of the radial axis (#5735)
• Theme elements that do not exist now throw warnings instead of errors (#5719).
• Fixed bug in coord_radial() where full circles were not treated as such
  (@teunbrand, #5750).
• When legends detect the presence of values in a layer, NA is now detected
  if the data contains values outside the given breaks (@teunbrand, #5749).
• annotate() now warns about stat or position arguments (@teunbrand, #5151)
• guide_coloursteps(even.steps = FALSE) now works with discrete data that has
  been formatted by cut() (@teunbrand, #3877).