The string encoding test wasn't using the types for anything. The
boolean casting test included logic that should be in the tests for the
types, and the string test was legitimately not testing anything useful.

The validator has access to richer type information

SQL has mechanisms we can use to copy data from one table into another.

As we move towards removing the types from the column objects, any
remaining places which have access to richer type information should be
using it.

The column is no longer used for anything besides type casting, which is
what we're trying to remove from the column entirely.

Update copyright notices to 2015 [ci skip]

Correctly use the response's status code calling head

Indent the list content by 4 spaces instead of 2 to match the other
changelog files. Also wrap the lines around 80 chars.

Finally update the documentation example with nit-picky things.

Fixed typo in ActiveJob CHANGELOG [ci skip]

Fix warning: assigned but unused variable - post

Commit 20fece14 introduced the `_status_code` method to fix calls to
`head :ok`. This method has been added on both ActionController::Metal
and ActionDispatch::Response.

As for the latter, this method is just equivalent to the `response_code`
one so commit aefec3c6 removed it from the `Reponse` object so call to
the `_status_code` method on an ActionController::Base instance would be
handled by the `Metal` class (which `Base` inherits from) but the status
code is not updated according to the response at this level.

The fix is to actually rely on `response_code` for ActionController::Base
instances but this method doesn't exist for bare Metal controllers so we
need to define it.

fix rake command typo in Testing guide [ci skip]

Fix spell life cycle on activejob docs [ci skip]

Update Getting Started guide to reflect foreign key in migration [ci skip]

 ActiveJob is not ActionJob [ci skip] 😄

Raise a better exception for renaming long indexes for mysql adapters

ActiveJob testing improvements

This error only happens when the foreign key is missing.

Before this fix the following exception was being raised:

    NoMethodError: undefined method `val' for #<Arel::Nodes::BindParam:0x007fc64d19c218>

Now the message is:

    ActiveRecord::UnknownAttributeError: unknown attribute 'foreign_key' for Model.

ActiveJob: delegate deserialization to the job class

encapsulate env in the request so that we can eventually move away from
the env hash

this will help decouple us from using the rack env hash

Load a has_one target for a new record if possible

Flatten the call stacks ActiveSupport::Callbacks produces, fix #18011.

PostgreSQL, Fix change detection caused by superfluous bytea unescaping

Fixes simple missprint in docs for #cyle in text_helper [ci skip]