dplyr 1.0.4

• Improved performance for across(). This makes summarise(across()) and
  mutate(across()) perform as well as the superseded colwise equivalents (#5697).

• New functions if_any() and if_all() (#4770, #5713).

• summarise() silently ignores NULL results (#5708).

• Fixed a performance regression in mutate() when warnings occur once per
  group (#5675). We no longer instrument warnings with debugging information
  when mutate() is called within suppressWarnings().