Describe ActiveSupport core extensions for BigDecimal, JSON support, and instance variable names.
change format example to read better when rendered with full_messages

The capital O was awkward and the validation wouldn't read "right" to the user.
Getting rid of the +automatic_inverse_of: false+ option in associations in favor
of using +inverse_of: false+ option. Changing the documentation and
adding a CHANGELOG entry for the automatic inverse detection feature.
explaining ActiveRecord#first in rails 3 and 4
Merge branch 'master' of github.com:rails/docrails
instructions for variations and alternatives for ActiveRecord#find
doc: renaming table name to follow the file's standards
Testing CheckPending middleware
Merge pull request #10893 from arunagw/test_for_checkpending_middleware

Testing CheckPending middleware
Merge branch 'master' of github.com:rails/docrails
Merge pull request #10889 from diatmpravin/fix-typo-in-action-view

fixed typo in action_view template
Fixed typos in activesupport [ci skip]

- 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
Merge pull request #10886 from wangjohn/chnges_for_automatic_inverse_associations

Documentation and cleanup of automatic discovery of inverse associations
cleanup whitespace in relation.rb
Remove fall back and column restrictions for `count`.
Image optimized for web view

Used imageoptim, Saved few bytes
http://imageoptim.com/
Merge pull request #10710 from senny/5554_let_the_database_raise_on_counts

Remove column restrictions for `#count`, let the database raise if the SQL is invalid.
Refactored ActiveRecord `first` method to get rid of duplication.
Don't blindly call blame_file! on exceptions in ActiveSupport::Dependencies::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
Merge pull request #10795 from atambo/master

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