The current reference documentation for dplyr indicates version 0.8.0:
https://dplyr.tidyverse.org/reference/index.html
This version is only a release candidate and 0.7.8 is the latest on CRAN:
https://dplyr.tidyverse.org/news/index.html
There are some significant differences which caught me out (e.g. new name argument in count() which incorrectly produces a new column in 0.7.8).
Wouldn't it make more sense for the function reference material to reflect the latest version on CRAN? Or else at least indicate elements which are different in the CRAN release?