failure to parse params should trigger a 400 Bad Request
remove unused require

not used remove_possible_method
Abort a rake task when missing db/structure.sql like `db:schema:load` task.
Rack::Mount was replaced by Journey, Fixed comment
Merge pull request #10387 from gaurish/rack-mount

Rack::Mount was replaced by Journey, Fixed comment
Merge pull request #10386 from kennyj/should_stop_task_when_missing_file

Abort a rake task when missing db/structure.sql like `db:schema:load` task.
mysql needs to reconnect after recreate. Thanks @mperham
add missing semicolon to journey parser.y
Merge pull request #10388 from benolee/fix-parser-semicolon

add missing semicolon to journey parser.y
Merge pull request #10339 from eiel/unused-require

remove unused require
Removing the app constant and replacing it with Rails.application
syntax. This helps removing the class level abstraction of an
application.
Merge pull request #10389 from wangjohn/removing_the_app_constant_and_replace_with_rails_application_instance

Removing the app constant and replacing it with Rails.application
Added :nodoc: for private methods
Merge pull request #10390 from Noemj/bind_param_handling

Added :nodoc: for relation.rb's private methods
Fix typos in deprecation proxy docs [ci skip]
Fix #8856 Ensure has_one association=(associate) triggers save.
activerecord/lib/active_record/associations.rb states:

    # [association=(associate)]
    #   Assigns the associate object, extracts the primary key, sets it as the foreign key,
    #   and saves the associate object.

Since commit 42dd5d9f2976677a4bf22347f2dde1a8135dfbb4 to fix #7191, this
is no longer the case if the associate has changed, but is the same
object. For example:

    # Pirate has_one :ship
    pirate = Pirate.create!(catchphrase: "A Pirate")
    ship = pirate.build_ship(name: 'old name')
    ship.save!

    ship.name = 'new name'
    pirate.ship = ship

That last line should trigger a save. Although we are not changing the
association, the associate (ship) has changed.
Mute psql output when running rake db:schema:load
Merge pull request #10349 from caliper-io/mute_psql_output

Fix noisy output when running rake db:schema:load on postgreSQL and structure.sql
Merge pull request #9857 from yyyc514/bad_params_should_400

failure to parse params should trigger a 400 Bad Request
maintain return value for recreate_database