Add the `<app_root>/test` dir to the `$LOAD_PATH` as a string:

- [Rails <= 5.0](https://github.com/rails/rails/blob/5-0-stable/railties/lib/rails/commands/test.rb#L6) used to add the `<app_root>/test` as a string; this behaviour changed in rails 5.1, it's appending a `Pathname` object

Log subscriber - avoid rescuing certain exceptions

Document setting the delivery_job for ActionMailer [ci skip]

[ActiveModel] Improve the performance of mass assignments

Don't map id to primary key in raw_write_attribute

Fix `dump_schema_information` with empty versions

Add test cases for #28274

Allow mailers to configure their delivery job

The `raw_write_attribute` method is used to update a record's attributes
to reflect the new state of the database in `update_columns`. The hash
provided to `update_columns` is turned into an UPDATE query directly,
which means passing an `id` key results in an update to the `id` column,
even if the model uses a different attribute as its primary key. When
updating the record, we don't want to apply the `id` column change to
the primary key attribute, since that's not what happened in the query.

Without the code to handle this case, `write_attribute_with_type_cast`
no longer contains any logic shared between `raw_write_attribute` and
`write_attribute`, so we can inline the code into those two methods.

Fixes #29460.

Update `working with javascript` readme to support rails-ujs behaviour. [ci skip]

Setting delivery_job on a mailer class will cause MessageDelivery to use
the specified job instead of ActionMailer::DeliveryJob:

    class MyMailer < ApplicationMailer
      self.delivery_job = MyCustomDeliveryJob

      ...
    end

Allow `uuid_test.rb` to be loaded on all adapters

Prevent extra `sync_with_transaction_state`

`object.id` is correctly restored since #29378 has merged.

Closes #28274, Closes #28395.

[Ryuta Kamizono & Eugene Kenny]

Allow translate default option to accept an array similar to i18n.t

`sync_with_transaction_state` in `to_key` is unneeded because `id` also
does.

Running `bin/test` from the activerecord directory produces this error:

    test/cases/adapters/postgresql/uuid_test.rb:43:in `<class:PostgresqlUUIDTest>': undefined method `supports_pgcrypto_uuid?' for #<ActiveRecord::ConnectionAdapters::SQLite3Adapter:0x007fc405e72a68> (NoMethodError)

The test only actually runs on the PostgreSQL adapter; we can avoid
triggering the error on other adapters with this `respond_to?` guard.

Avoid overwriting the methods of `AttributeMethods::PrimaryKey`

Use `require_relative` instead of `require` with full path

Add test for backward compatibility when using change_table

Fix formatting of AD::FileHandler and AD::Static doc [ci skip]

Add note to Railtie docs to use unique filenames

The fact that the names need to be globally unique was not obvious to me, so I
thought it'd be worth documenting. This not being clear was the cause of both
ctran/annotate_models#468 and instructure/outrigger#1.

[ci skip]

Drop IRB out of the web-console Gemfile comment