Progressbar

[instantkaffee]

Would you consider to add a feature to display a progressbar?
I think this would be real value adding piece, not offered by the other foreach adapters.

[HenrikBengtsson]

The progressr package adds this feature to any future-based frontend. Head over to https://github.com/HenrikBengtsson/progressr and see how to use it in future the framework with for instance future.apply and doFuture.