Keeps track of which series were dropped completely when running the preprocessing with dropna=True so that the transformations over the fitted values can be inverted correctly.
Fixes #233.
Checklist:
[x] This PR has a meaningful title and a clear description.
Description
Keeps track of which series were dropped completely when running the preprocessing with
dropna=True
so that the transformations over the fitted values can be inverted correctly.Fixes #233.
Checklist: