Cleanup loaded features and constants after dependency tests.
copy reflection_scopes’s unscoped value when building scope for preloading, fixes #11036
Add a section about job testing [ci skip]

* Cover lower level job testing (assertions about the execution of the
  job itself).
* Add a table with the custom assertions provided by Active Job's
  `TestHelper` module.
* Add an example testing job queuing inside a model
Delegate comparison operator to value
activerecord: rake db:create shows underlying error message.
Remove skip-gems from 4-2 release notes

- This option was removed in https://github.com/rails/rails/commit/bf17c8a531bc80.
- [ci skip]
Merge pull request #17510 from pda/ar-create-database-error-message

rake db:create shows underlying error message.
tests, add note about the usage of a specific timezone. Closes #17448.
Merge pull request #17519 from prathamesh-sonpatki/rm-skip-gems

Remove skip-gems from 4-2 release notes [ci skip]
Add skip-turbolinks entry to 4.2 release notes and improve changelog

[ci skip]
Update `bin/rake about` [ci skip]

As we are no more displaying frameworks
Add test/jobs files in `rake stats`
Merge pull request #17521 from arunagw/aa-jobs-test-in-stats

Add test/jobs files in `rake stats`
Merge pull request #17360 from bronzle/includes_and_unscoped

copy reflection_scopes’s unscoped value when building scope for preloading
Merge pull request #15956 from zuhao/refactor_activesupport_dependencies_test

Cleanup loaded features and constants after dependency tests.
Remove session to allow `with_routing` to be called twice.

Fixes: https://github.com/rails/rails/issues/16814
Improve performance of AR object instantiation

We introduced a performance hit by adding an additional iteration
through a model's attributes on creation. We don't actually need the
values from `Result` to be a hash, we can separate the columns and
values and zip them up ourself during the iteration that we have to do.
Remove unneccesary default parameters
Removed documentation that still mentioned using respond_with in place
of respond_to. respond_with was moved into the responders gem and deprecated
inside rails, so there is no need to mention it within rails itself.
Merge pull request #17528 from revans/respond_with_doc

[docs] Removed respond_with documentation as it was deprecated and removed from Rails [ci-skip]