Even though I read it carefully, my brain tricked me. 😢

Add documentation to ActionDispatch::Request

Rails 4 upgrade notes about clashing named route selection changes

Add support for generate scaffold password:digest

* adds password_digest attribute to the migration
* adds has_secure_password to the model
* adds password and password_confirmation password_fields to _form.html
* omits password from index.html and show.html
* adds password and password_confirmation to the controller
* adds unencrypted password and password_confirmation to the controller test
* adds encrypted password_digest to the fixture

* adds password_digest attribute to the migration
* adds has_secure_password to the model
* adds password and password_confirmation password_fields to _form.html
* omits password entirely from index.html and show.html
* adds password and password_confirmation to the controller
* adds unencrypted password and password_confirmation to the controller test
* adds encrypted password_digest to the fixture

rework passing headers and env variables in integration tests

Closes #6513.

Also:
cleanup, use consistent syntax for `Http::Header` and test.

Change from each to each_value in http/parameters since we don't use key

fix typo in Active Record CHANGELOG [ci skip]

The bug with `ActiveSupport::TimeZone.parse` described in #9678 was
unwittingly fixed in 005d9106 so add some tests to prevent regression.

removing out of date comment.  :heart::heart::heart::heart::heart::heart::heart::heart::heart::heart::heart::heart: @pixeltrix

Also quote extension name in disable_extension

A patch was committed recently which quoted the extension name in the SQL for `enable_extension`. But the same wasn't done for `disable_extension`.

Cache the value of "super" in a variable and use it instead.

dependent: :destroy should call destroy_all

Pass column to quote when copying a sqlite table.

To make quote escape binary data correctly it needs the column passed in.

Fix typo in DependenciesTestHelpers module name

To make quote escape binary data correctly it needs the column passed in.

Commit https://github.com/rails/rails/pull/9668 shows warning
when `delete_all` is invoked with `:dependent` option
`:destroy`.

Unfortunately invoking `Post.destroy_all` invokes
`post.comments.delete_all` as part of `has_many` callbacks.

This commit ensures that instead `post.comments.destroy_all` is
invoked and in the process no warning is generated.

See issue #9567 for details .

Show warning message if delete_all is firing callbacks

`post.comments.delete_all` will fire callbacks if :dependent option is
:destroy . It will be fixed in Rails 4.1 . In the meantime display
a warning . Look at #9567 for details .

Using regexps as arguments without parentheses end up raising:

    warning: ambiguous first argument; put parentheses or even spaces