Allow AnyTime events that still have time to occur in the current day to
fall in a window covering the current day, instead of waiting until the
next day in the Recurrance.
Wow! This was hairy, but about 10x less hairy than expected actually!
A bit more recursion than I really like, since I think in theory all
of this date stuff can be calulated using some formulas I am too lazy too
look up. But this doesn't matter in practice; I asked it for
nextTime (Schedule (Divisible 100 (Yearly 7)) (SpecificTime 23 59) (MinutesDuration 10)) Nothing
.. and it calculated (NextTimeExactly 2100-01-07 23:59:00) in milliseconds.
Rather similar to crontab, although with a different format.
But with less emphasis on per-minute scheduling.
Also, supports weekly events, which cron makes too hard.
Also, has a duration field.
