It is useful for a small home page to be able to
submit events which have happened, ie I just want a
calender with a few events in it, and if I miss
someone's birthday, then I want to be able to add it
in this year (with recur), rather than next year.
Basically I tend to update my pages AFTER the event,
and it would be useful to lift the data restriction
so that I can back-fill events