Implement option to set urgency as a % or fraction of max(urgency).

(One of )the goal(s) of taskwarrior is to lower the maximum urgency you experience in your life. This could perhaps be stressreducing.

That means, that if one is successfull in doing so, the urgency threshold would become too high over time (as the max urgency would sink below the urgency threshold). This would render the customSort overview less usefull/useless.

A solution to this problem can be to set the urgency threshold as a fraction of the maximum urgency instead of as absolute number. This means you will get the most urgent tasks at the bottom as long as they are above the urgency threshold (which has become dynamic).

Implementation:

0. Ask user to set the urgency threshold as a percentage of the maximum found urgency of all tasks.

1. In customSort update the absolute treshold value before every sort, based on this percentage and the max urgency.


2. (Also update the absolute value of the urgency threshold in the task config if it still exists).