datetime sets and set math
DateTime::Set is a module for datetime sets.  It can be used to handle
two different types of sets:
 * Fixed sets of predefined datetime objects.  For example, if we wanted
   to create a set of datetimes containing the birthdays of people in
   our family.
 * Recurring sets, such as "every Wednesday", or "noon on the 15th day
   of every month".  This type of set can have fixed starting and ending
   datetimes, but neither is required.

Maintainer: The OpenBSD ports mailing-list <ports@openbsd.org>

WWW: http://search.cpan.org/dist/DateTime-Set/
