Fix current_page? helper issue with engine root path

Use of ParameterFilter no longer forces `request.filtered_parameters' class to be Hash

Fix `Relation#exists?` queries with query cache

Remove debug print

Use nullable `id` column instead of a primary key

Fixes FIXME: rb-inotify 0.99 has been released

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

Log subscriber - avoid rescuing certain exceptions

Don't map id to primary key in raw_write_attribute

Fix `dump_schema_information` with empty versions

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

https://github.com/guard/rb-inotify/pull/49 has been merged.

Avoid overwriting the methods of `AttributeMethods::PrimaryKey`

Generate field ids in `collection_check_boxes` and `collection_radio_buttons`

Opted to do this in a separate commit so ff7ec79e could just be
a backport of f81f840c.

Fix the mistake of not using Ruby's ENV hash from the get go and get
windows support.

See https://github.com/rails/rails/issues/29067#issuecomment-301342084
for rationale.

This reverts commit b76f82d7.

Fixes #29067. Fixes #29081.

Since I didn't create a true merge commit in a1eabb5a it didn't carry
over the earlier commit above.

Manually port the templates to this branch.

Stan wrote the templates, so he gets the credit :)

[Stan Lo & Kasper Timm Hansen]

That won't be true for Action Pack and Action Mailer.

Remove requirement on mathn

Fix `default_scoped` with defined `default_scope` on STI model

load_schema! is overridden by attribute modules, so we need to wait
until it has returned.

Support PostgreSQL 10 `pg_sequence`

see: https://bugs.ruby-lang.org/issues/6696

some typos and rephrasing in system test guide [ci skip]

SystemTesting::Driver can register capybara-webkit and poltergeist

Replace an outdated mention of `jquery_ujs` with `rails-ujs`

Fix regression in Numericality validator

Add missing `delegate :extending, to: :all`

Fix association with extension issues

Fix UUID column with `null: true` and `default: nil`

Check for jQuery ajax

round before calculating exponent in number_to_human_converter

[5.1 Backport] Fix edge guides for Active Record callbacks

[ci skip]

Doc updates for ActiveRecord::Batches