release: 4.0.0

[jsjoeio]

Checklist

• Assign to next release manager
• Close previous release milestone
• Create next release milestone
• Associate issue with next release milestone

[pavlelee]

Any progress? There were some problems with the previous release. I want to experience 3.12.1

[jsjoeio]

@pavlelee Very close! You'll see some remaining TODOs from this PR. We need to create issues and add those to this milestone. Follow that for progress updates!

[jsjoeio]

I just realized I will be out of town Dec 2-3 so @code-asher maybe you can handle the release? If not, we can push to Monday, Dec. 6

[code-asher]

No problem.

[benz0li]

@jsjoeio I am aware, that release 4.0.0 is a major work-over. But it has been postponed many times now.

Keep up the great work and stay focused.

[pavlelee]

Full of expectation