One or multiple mail interceptors can be unregistered using
`ActionMailer::Base.unregister_interceptors` or
`ActionMailer::Base.unregister_interceptor`.

For preview interceptors, it's possible to use
`ActionMailer::Base.unregister_preview_interceptors` or
`ActionMailer::Base.unregister_preview_interceptor`.

Refactors logic to constantize a string/symbol into separate method.

It's only used to grab the type for type casting purposes, and we would
like to remove the type from the columns entirely.

I'm planning on deprecating the column argument to mirror the
deprecation in [arel].

[arel]: https://github.com/rails/arel/commit/6160bfbda1d1781c3b08a33ec4955f170e95be11

I'm planning on deprecating the column argument to mirror the
deprecation in [arel].

[arel]: https://github.com/rails/arel/commit/6160bfbda1d1781c3b08a33ec4955f170e95be11

I'm planning on deprecating the column argument to mirror the
deprecation in [arel].

[arel]: https://github.com/rails/arel/commit/6160bfbda1d1781c3b08a33ec4955f170e95be11

I'm planning on deprecating the column argument to mirror the
deprecation in [arel].

[arel]: https://github.com/rails/arel/commit/6160bfbda1d1781c3b08a33ec4955f170e95be11

I'm planning on deprecating the column argument to mirror the
deprecation in [arel].

[arel]: https://github.com/rails/arel/commit/6160bfbda1d1781c3b08a33ec4955f170e95be11

Fix Typo SecureToken [ci skip]

I'm planning on deprecating the column argument to mirror the
deprecation in [arel].

[arel]: https://github.com/rails/arel/commit/6160bfbda1d1781c3b08a33ec4955f170e95be11

There's very little value in logging "<NULL binary data>" instead of
just "nil". I'd like to remove the column from the equation entirely,
and this case is preventing us from doing so.

This sets a precident for how we handle `attribute` calls, which aren't
backed by a database column. We should not take this as a conscious
decision on how to handle them, and this can change when we make
`attribute` public if we have better ideas in the future.

As the composed attributes API gets fleshed out, I expect the
`persistable_attributes` method to change to
`@attributes.select(&:persistable).keys`, or some more performant
variant there-of. This can probably go away completely once we fully
move dirty checking into the attribute objects once it gets moved up to
Active Model.

Fixes #18407

Fix typo in PostresSQLAdapter's documentation [ci skip]

The last supported plugin on the list was protected_attributes, which is
not going to be supported anymore on Rails 5.

[ci skip]

Related to #10690.

Switching SecureTokens to Base58

Update Secure Token Doc [ci skip]

remove require securerandom, core_ext/securerandom already do that ref 7e006057

Remove attributes_protected_by_default reference

Remove attributes_protected_by_default reference, since MassAssignmentSecurity was removed from ActiveModel f8c9a4d3

Copy records to parent transaction should happen on TransactionManager

It is up to the TransactionManager keep the state of current transaction, so after it commits it needs to copy any remaning record to the next current transaction

Use keyword args on committed! and rolledback!

As discussed before, those methods should receive a keyword args instead of just parameters

This is cropping up all over the place. After a brief dive, I'm really
not sure why we have `arel.bind_values` at all. A cursory grep didn't
reveal where they're actually being assigned (it's definitely in AR, not
in Arel). I'd like to dig further into it, as I'm fairly certain we
don't actually need it, we just need a way for the predicate builder to
communicate merged binds upstream.

Fixes #18414

The reason this bug occured is that we never actually check to see if
this column has changed from it's default, since it was never assigned
and is not mutable.

It appears I was wrong in b301c402, with
my statement of "there is no longer a case where a given value would
differ from the default, but would not already be marked as changed."

However, I chose not to revert the deletion of
`initialize_internals_callback` from that commit, as I think a solution
closer to where the problem lies is less likely to get erroneously
removed. I'm not super happy with this solution, but it mirrors what is
being done in `_update_record`, and a fix for one should work for the
other.

I toyed with the idea of changing the definition of `changed?` on the
type to `changed_in_place?`. If we type cast the raw value, it'll break
a test about updating not modifying the lock column if nothing else was
changed. We could have the definition check if `raw_old_value` is `nil`,
but this feels fragile and less intention revealing. It would, however,
have the benefit of cleaning up old data that incorrectly persisted as
`nil`.

Fixes #18422

Use parallel bundler install.

Correctly count methods when using declarative `#test` in minitest

Travis recommends a default of 3.
See: http://docs.travis-ci.com/user/languages/ruby/#Default-Test-Script

Default headers, removed in controller actions, will not be reapplied to the test response

Add _mailer suffix to i18n path

ActiveRecord: release connection on reconnect failure.

- test/functional
- test/unit