Brush fixes and enhancements #2691

Job	Run time
website / pkgdown	4m 24s
routine / routine	7m 37s
R-CMD-check / setup	1m 24s
R-CMD-check / macOS-latest (4.4.2)	3m 13s
R-CMD-check / windows-latest (4.4.2)	4m 36s
R-CMD-check / ubuntu-latest (devel)	17m 39s
R-CMD-check / ubuntu-latest (4.4.2)	5m 17s
R-CMD-check / ubuntu-latest (4.3.3)	5m 39s
R-CMD-check / ubuntu-latest (4.2.3)	5m 27s
R-CMD-check / ubuntu-latest (4.1.3)	5m 27s
R-CMD-check / ubuntu-latest (4.0.5)	6m 0s
	1h 6m 43s

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