Correct test description for large integer test
Fixing documentation in JSON#from_json

Commit d67b289 introduced a tiny regression in the docs for #from_json,
true needs to be included when the root node is present.
Merge pull request #17691 from nickveys/from-json-docs

Documentation regression in JSON#from_json
Test against rack master
pass over the release notes
Fix typo in Rails 4.2 release notes
Merge pull request #17794 from zavan/fix-typo

Fix typo in Rails 4.2 release notes
Fix format "Form Helpers" guide

The `"_tag"` was interpreted as the start of a italics.
Merge pull request #17796 from leafac/fix-format

Fix format "Form Helpers" guide
edits in the release notes for 4.2
removes double mention of deliver_now
rails -> bin/rails in index.html
Refactor `SchemaCreation#visit_AddColumn`
updates some pointers in the guides welcome section [ci skip]
StatementCache is private API

It should not be used in applications
Action Mailer change log pass

[skip ci]
Update the StatementCache documentation
Merge pull request #17800 from jonatack/patch-8

Action Mailer change log pass [ci skip]
Fix CHANGELOG typo introduced in e2cce6cd [ci skip]
Follow-up to e2cce6c

[skip ci]