Release candidate for 4.0

[pomianowski]

Pull request type

Please check the type of change your PR introduces:

• Update
• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes

[Jay-o-Way]

Is there an e.t.a. in sight?

[chucker]

I love the work you're doing, but 3.0 barely seems ready. The docs don't offer a migration guide from 2.x, some pages are empty, and the release notes have said "TBA - Will update this release note soon <3" since February.

Now you want to do another major release with presumably breaking changes?

[pomianowski]

I love the work you're doing, but 3.0 barely seems ready. The docs don't offer a migration guide from 2.x, some pages are empty, and the release notes have said "TBA - Will update this release note soon <3" since February.

Now you want to do another major release with presumably breaking changes?

The change in the major number results from a change in the interface and not a major change like in 3.0, in accordance with semver