Allow printing arguments for duration

[kov]

I have a function that is called several times and I would like to see how much it takes for each argument. It would be helpful to quickly identify pathological cases.

[y2kappa]

Thanks for the feedback. I can see how this would work, if you implement debug to to_string for the arguments, you could store them in a different record mode. I can provide guidance if you want to implement it. I don't have time, unfortunately.