rails/rails — pull request #16525 by kaspth (2014-08-16 19:19:17+00:00)
Title: Prepare for partial release.

- Default to `Rails::DeprecatedSanitizer` in `ActionView::Helpers::SanitizeHelper`.
- Add upgrade notes.
- Add sanitizer to new applications Gemfiles.
- Remove 'rails-dom-testing' as a dependency.