Usage:
fargen-time-list --after "2013-12-25" --before "2013-12-27"
fargen-time-list --instantaneous
fargen-time-list --ongoing
fargen-time-list "something"
- if AFTER is defined and AFTER is a valid date, then option is valid
- search for queries with START or END after date AFTER, inclusive
- if BEFORE is defined and BEFORE is a valid date, then option is valid
- search for queries with START or END before date BEFORE, inclusive
- if INSTANTANEOUS is True, then option is valid
- search for queries with START date equal to None
- if ONGOING is True, then option is valid
- search for queries with END date equal to None