Ruby on Rails: v6.0.2.rc1 Release

## Active Support

• Eager load translations during initialization.

  Diego Plentz

• Use per-thread CPU time clock on ActiveSupport::Notifications.

  George Claghorn

Active Model

• No changes.

Active Record

• Share the same connection pool for primary and replica databases in the transactional tests for the same database.

  Edouard Chin

• Fix the preloader when one record is fetched using after_initialize but not the entire colection.

  Bradley Price

• Fix collection callbacks not terminating when :abort is thrown.

  Edouard Chin, Ryuta Kamizono

• Correctly deprecate where.not working as NOR for relations.

  12a9664 deprecated where.not working as NOR, however doing a relation query like where.not(relation: { ... }) wouldn't be properly deprecated and where.not would work as NAND instead.

  Edouard Chin

• Fix db:migrate task with multiple databases to restore the connection to the previous database.

  The migrate task iterates and establish a connection over each db resulting in the last one to be used by subsequent rake tasks. We should reestablish a connection to the connection that was established before the migrate tasks was run

  Edouard Chin

• Fix multi-threaded issue for AcceptanceValidator.

  Ryuta Kamizono

Action View

• No changes.

Action Pack

• Allow using mountable engine route helpers in System Tests.

  Chalo Fernandez

Active Job

• Allow Sidekiq access to the underlying job class.

  By having access to the Active Job class, Sidekiq can get access to any sidekiq_options which have been set on that Active Job type and serialize those options into Redis.

  https://github.com/mperham/sidekiq/blob/master/Changes.md#60

  Mike Perham

Action Mailer

• Fix ActionMailer assertions don't work for parameterized mail with legacy delivery job.

  bogdanvlviv

Action Cable

• No changes.

Active Storage

• No changes.

Action Mailbox

• No changes.

Action Text

• No changes.

Railties

• Fix the collision check for the scaffold generator.

  Ryan Robeson

• Configuration files for environments (config/environments/*.rb) are now able to modify autoload_paths, autoload_once_paths, and eager_load_paths.

  Allen Hsu & Xavier Noria