Todo: fix contributors

This summary text looks good, but why are there no other entries in the whats-new? Have we become that sloppy at enforcing additions to the release notes in PRs?

I've checked the commit list and added one that was missing already. Several PR's (4 I think) are listed under the non-nanosecond new features entry. @TomNicholas which commits (which are not yet mentioned) should definitely be added to the whats-new?

Well I don't know about specific commits, but there are new features mentioned in the summary text that don't have whats-new entries, e.g.

suggestion of correct names when trying to access non-existent data variables

To be clear I'm not asking you to go back and fish through and add them, but I do think we should be trying harder to actually document all changes as we merge PRs. (Or better yet, have some automated enforcement.)

Well I don't know about specific commits, but there are new features mentioned in the summary text that don't have whats-new entries, e.g.

suggestion of correct names when trying to access non-existent data variables

That's that one here:

Improve the error message raised when no key is matching the available variables in a dataset. (:pull:9943) By Jimmy Westling.

I've taken the description of the PR instead because it gets better to the point.