DOC: Add whatsnew file for 2.1.0
> This looks like the format for 2.0.1 and not a minor release?

Yes, you're correct, my mistake, fixed it. Removed the contributor command, this failed the doc build (also left it out in the other release notes initially) > Removed the contributor command, this failed the doc build (also left it out in the other release notes initially)

Thanks for taking care of this. That was because the tag `2.0.0` doesn't exist yet, updating to `2.0.0rc0` (which is the correct one) would have also fixed the problem, but we can add it later.