Point to future 4-2-stable branch for detailed changes. [ci skip]
Sync Active Support changelogs with release notes [ci skip]
4.2 Release Notes is a work in progress [ci skip]
Assorted fixes for AS release notes [ci skip]
* `Hash#deep_transform_keys` has already been backported
* Mentioning `ActiveSupport::SafeBuffer#prepend` in the "Deprecations" section would be enough
* Fix syntax in `Kernel#concern` example
Sync AS release notes with the latest commits [ci skip]
Synced 4.2 release notes with commits in railties [ci skip]
Sync AP Deprecations and Notable changes from CHANGELOG [ci skip]
Removed 4.2 release notes from the index [ci skip]
This deprecation was reverted in 489a8f2 [ci skip]
Synced Active Record changelogs for 4.2 release notes [ci skip]
Synced Active Model changelog with the release notes [ci skip]
Added cc26b6b as a 'Removal' item in AP release notes [ci skip]
Use 'character' instead of 'symbol' to avoid confusion [ci skip]
Edit pass on 4.2 release notes [ci skip]
📝💄 Use `.xyz` and `#xyz` appropiately [ci skip]
