Add `bounds` to `dplyr::between()`

[ScientiaFelis]

The docs of between() say:

This is a shortcut for x >= left & x <= right

It would be nice to be able to set between() to exclude the values of x and y, that is equal to

x > left & x < right

[DavisVaughan]

That's not completely out of the question because in join_by() we allow between(bounds = "()")

dplyr/R/join-by.R

Lines 66 to 75 in 384ff2c

	#' - `between(x, y_lower, y_upper, ..., bounds = "[]")`
	#'
	#' For each value in `x`, this finds everywhere that value falls between
	#' `[y_lower, y_upper]`. Equivalent to `x >= y_lower, x <= y_upper` by
	#' default.
	#'
	#' `bounds` can be one of \code{"[]"}, \code{"[)"}, \code{"(]"}, or
	#' \code{"()"} to alter the inclusiveness of the lower and upper bounds. This
	#' changes whether `>=` or `>` and `<=` or `<` are used to build the
	#' inequalities shown above.

[DavisVaughan]

And we considered it in funs tidyverse/funs@057146f

[psychelzh]

Just out of curiosity, given that {funs} package is not actively developed, will this be possible soon? And will {funs} be on CRAN, too?