Drop extra variable from test

Fix typos in AR changelog [ci skip]

Warning removed for Minitest

Grammar fix [ci skip]

Fixed typos in activesupport [ci skip]

fix ActiveModel::Validations.validators_on doc

Don't blindly call blame_file! on exceptions in ActiveSupport::Dependes::Loadable

It is possible under some environments to receive an Exception that is
not extended with Blamable (e.g. JRuby).
ActiveSupport::Dependencies::Loadable#load_dependency blindly call
blame_file! on the exception which throws it's own NoMethodError
exception and hides the original Exception.

This commit fixes #9521

Remove column restrictions for `#count`, let the database raise if the SQL is invalid.

Documentation and cleanup of automatic discovery of inverse associations

- eval'ed to eval'd in accordance with https://github.com/rails/rails/pull/10889
- tried to improve statement about compiling Procs into methods using define_method

fixed typo in action_view template

Testing CheckPending middleware

of using +inverse_of: false+ option. Changing the documentation and
adding a CHANGELOG entry for the automatic inverse detection feature.

Time.at allows passing a single Time argument which is then converted
to an integer. The conversion code since 1.9.3r429 explicitly checks
for an instance of Time so we need to override it to allow DateTime
and ActiveSupport::TimeWithZone values.