Warnings when using deprecated data sets?

[voisey]

When a dataset is updated/fixed for some reason, like was done with CDFZRAP (#1068), we tend to keep the old dataset and create a dataset with a new name for the new version, e.g. we now have CDFZRAP and CDFZRAP_NEW. This makes sense for reproducibility of old results, but I suppose there's nothing to stop someone unintentionally using the old version. I was therefore thinking that we could perhaps add some warnings to the code when such datasets are used? I'm not sure how comprehensive these warnings could/should be, but the obvious place would be in vp-setupfit. Just something like "CDFZRAP is a deprecated dataset, which exists for reproducibility. The up-to-date version is CDFZRAP_NEW". Thoughts?

[Zaharid]

I thing we should go for the real solution to the problem, namely #494.