utilize existing r4ss functions to reduce redundant code?

[iantaylor-NOAA]

I skimmed through the functions associated with the sensitivity analysis workflow.
It looks really good, but I can't claim to understand it until trying it out someday in the future.

I do note that you could shrink copy_BaseModel_SSinputs() by having is call on r4ss::copy_SS_inputs().

[MatthVeron]

Thanks @iantaylor-NOAA and thank you for your time again. I would love to get your feedback on this and improve it accordingly. I'll modify things to account for the comments/suggestions that have been done today.

You're totally right about the r4ss::copy_SS_inputs() function.
I'll probably modify it - This is something that is "under discussion" in my mind because it's possible that we'll develop some sort of "generic stock assessment workflow" based on what we've all developed during this course, so it would be helpful to keep the functions as generic as possible...