New argument `zeros` in `ranktransform()` #2061

Job	Run time
R-CMD-check / macOS-latest (release)	4m 48s
R-CMD-check / windows-latest (devel)	8m 58s
R-CMD-check / windows-latest (release)	6m 15s
R-CMD-check / ubuntu-latest (devel)	7m 58s
R-CMD-check / ubuntu-latest (release)	6m 43s
	34m 42s

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