Currently Herald does a very good job at reacting on current events. What if we could apply its power to clean the backstage as well? We are missing a way to apply Herald rules when objects or last actions come to an age.
Use cases:
* If a task assigned to someone hasn't got any activity from its owner in N months, put it up for grabs.
* If a task has been marked as High N months ago and there is no activity, demote it as Normal.
* If a Needs_Info task hasn't got any activity in N months, resolve it as Declined.
* If a Diff has been in Request Changes status for N months without a new patch uploaded, abandon it.