DOC: What release version do we want in the header?
I think this has come up before, but which whatsnew document, if any, do we want to link from the header? The "What's New in 1.0.1" in the screenshot below.

<img width="454" alt="Screen Shot 2020-03-16 at 8 16 42 AM" src="https://user-images.githubusercontent.com/1312546/76762092-a15c7800-675e-11ea-864e-11978f436b86.png">

Choices

1. Latest release (e.g. 1.0.2)
2. Last major release (e.g. 1.0.0)
3. None

cc @jorisvandenbossche @datapythonista.

(I think my preference is for option 3, since it's not clear whether 1 or 2 is better, so put it behind an extra click via the "Release Notes" page).