DOC: combine regressions in section in v1.0.1 whatsnew

[jorisvandenbossche]

Similarly how we did it for 0.24.x, gathering all regressions in the first section of the whatsnew (as those are the most important part of 1.0.1)

cc @TomAugspurger

[jorisvandenbossche]

Given that there is not much remaining in the "Bug fixes" section, I can probably remove the subtitles there?

[TomAugspurger]

I can probably remove the subtitles there?

Agreed.

[TomAugspurger]

This will cause merge conflicts with outstanding PRs. What order do you want to merge these in?

[jorisvandenbossche]

I can fixup conflicts later here, or also help fixing conflicts in the other PRs. Doesn't matter really to me

[TomAugspurger]

Let's just merge this since it's already passing.

[lumberbot-app]

Owee, I'm MrMeeseeks, Look at me.

There seem to be a conflict, please backport manually. Here are approximate instructions:

1. Checkout backport branch and update it.

$ git checkout 1.0.x
$ git pull

2. Cherry pick the first parent branch of the this PR on top of the older branch:

$ git cherry-pick -m1 a9d24502f50045456fe94abb91b867318fcaf54a

3. You will likely have some merge/cherry-pick conflict here, fix them and commit:

$ git commit -am 'Backport PR #31607: DOC: combine regressions in section in v1.0.1 whatsnew'

4. Push to a named branch :

git push YOURFORK 1.0.x:auto-backport-of-pr-31607-on-1.0.x

5. Create a PR against branch 1.0.x, I would have named this PR:

"Backport PR #31607 on branch 1.0.x"

And apply the correct labels and milestones.

Congratulation you did some good work ! Hopefully your backport PR will be tested by the continuous integration and merged soon!

If these instruction are inaccurate, feel free to suggest an improvement.