This gem will be used to extract and deprecate old-style finder option hashes in Active Record:
Post.find(:all, conditions: { published_on: 2.weeks.ago }, limit: 5)
It will be a dependency of Rails 4.0 to provide the deprecated functionality.
It will be removed as a dependency in Rails 4.1, but users can manually include it in their Gemfile and it will continue to be maintained until Rails 5.