[SPRINT] Functions with *args can now have explicit keyword args

Please do not address this issue unless you’re part of the sprint (June 6th 2020).

Functions like resample have a signature like def resample(*arrays, **options) because of a limitation of python 2, where named keyword arguments could not be used with variable number of positional argument. We now should be using explicit keyword arguments where possible.

[thomasjpfan]

@JosephTLucas Let’s do shuffle first. It would make it easier to review and it would be a good way to get started.

[thomasjpfan]

Other others are:

• make_pipeline
• make_union
• shuffle
• make_column_transformer