Thanks for your contribution. I guess it should still be welcome to add a test with the column_width parameter to a Databook export. And probably the docs needs a small update too.

Thanks for your contribution. I guess it should still be welcome to add a test with the column_width parameter to a Databook export. And probably the docs needs a small update too.

Thank you; I took another look at the tests from #516 and realized they would exercise my changes if adapted slightly, so I did so and then tried to reduce repetition between the two test helper methods.

I've also added some documentation; I'm a bit uncertain if this is enough as I'd assumed from the existing documentation that this would simply work and was surprised when it did not.

@claudep is there anything else needed from me on this change?