Pressing S-left/right anywhere on a timestamp decreases/increases it by one day.
Pressing S-down/up on a component of a timestamp decreases/increases it by one unit of that component. How can we include an easy and quick way to decrease/increase the timestamp by one week. I find myself having to do that quite often (increase). It's not difficult to hit S-right/up seven times, but there is the possibility of miscounting. Should I just bind ``C-u 7 S-right`` and ``C-u 7 S-left``?