Turns on activerecord-, activesupport- and actionpack-minimizer, and patches parts of Rails and common gems that redo work on every request (Action Text plain text, Request#host, OmniAuth strategies).

RuboCop cop and ERB fixer that rewrite calls to the attribute methods activerecord-minimizer's strict mode removes (name?, name_changed?, ...) into the calls they stood for, from the app's manifest.