Suggestion: Archive Completed Tasks only after a certain period

[Fitnerd]

I suggest an option be added where a time period can be specified after which a completed task may be archived (and removed from the original task list). For example: 2 days after the task was marked as completed.

This is useful when you either accidentally marked the task as completed, or even though it is completed you might still want to refer back to it for a while. So, it makes sense for only those tasks to be archived that not only have been completed but also "forgotten" about - these are the tasks that are really no longer needed in the task list and hence may be archived safely. Hence the need for a grace time period.