hms from package of the same name (conversion to/from).nth_dw_after and nth_dw_before calculating the nth occurrence
of a day of week after or before given date.as.tind method for multi-column data frames is significantly faster
in the following cases:
tind constructor when all columns are numeric,date_time when there are two columns and one represents dates
and the other times of day.First CRAN release.