ah, very nice!
I was kind of amazed how many recurrence libraries there are. It seems to be what a lot of people actually need/want?
I will definitely take a look through it, especially lib/calendar_recurrence/rrule.ex. The recurrence calculator in ical is currently what was in icalendar, but refactored for clarity / succinctness.
One of the goals is to expand recurrence support to cover the whole recurrence rule space. If you’d be interested in collaborating on that, I’d be very happy to do so!
