longterm entries

[jonmorehouse]

I've found that I'd like to put "longer term" entries into the datebook application.

For instance, let's say I'd like something to show up each day until some arbitrary date in the future, it'd be nice to see that daily until that date comes.

I think as a first pass ... something like the following could suffice:

## longterm

### Friday June 1st

* finish datebook v1

[jonmorehouse]

Solved by #7