rails/rails — pull request #4900 by lest (2012-02-06 06:44:07+00:00)
Title: allow mass-assign version attribute in AR::SchemaMigration

Issue #4897

`rake db:migrate` uses mass-assignment https://github.com/rails/rails/blob/master/activerecord/lib/active_record/migration.rb#L777 that causes error when `config.active_record.whitelist_attributes` is set to `true`