alma_search() retrieves all events between from and to.
Examples
on_12th <- monthly() %>% recur_on_day_of_month(12)
on_monday <- weekly() %>% recur_on_day_of_week("Monday")
# On the 12th of the month, or on Mondays
rb <- runion(on_12th, on_monday)
alma_search("2019-01-01", "2019-01-31", rb)
#> [1] "2019-01-07" "2019-01-12" "2019-01-14" "2019-01-21" "2019-01-28"