Cleanup loaded features and constants after dependency tests.
copy reflection_scopes’s unscoped value when building scope for preloading, fixes #11036
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.
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]
Remove redundancy

I love this guide! 
and "visually see" is redundant.
remove "visually", then the sentence reads:
> Action Mailer previews provide a way to see how emails look
Replace Html with HTML [ci skip]

- Everywhere else we using HTML Sanitizer except this place.
Merge pull request #17530 from prathamesh-sonpatki/fix-html

Replace Html with HTML [ci skip]
Merge pull request #17529 from slothbear/patch-1

Remove redundancy [ci skip]