Another suggestion: If we have time, we can consider commands like
"display deadline Nov 11" (before a date)
as well. Now we only accept display deadline Nov 4 - Nov 11(period).
Bug with open task fixed.
To your suggestion: actually we aready supported that. However, it doesn't work anymore (maybe broken during the refactoring :-S ).
Another suggestion: If we have time, we can consider commands like "display deadline Nov 11" (before a date) as well. Now we only accept display deadline Nov 4 - Nov 11(period).