clarencen/lshift — Issue #39: Sliding window constraint
Author: clarencen
Created: 2011-11-14 22:41:28+00:00
State: open

Being able to define a sliding window for a date constraint would be
cool. Each end of a date constraint could have one of the following
options:

* No bound (already available)
* A fixed date (the current behavior)
* A fixed time period from the current system date or time
* A particular cut off date in the future with a floating component,
e.g. the 1st of the last or next October

These options could be mixed with each other subject to common sense
validation constraints.