Re: Support per-instance request handlers
LGTM http://codereview.appspot.com/14116
Support per-instance request handlers
Reviewers: louiscryan, Message: This adds support for per-request handlers: handlers registered by Class will be created once per-request, handlers registered by instance will (of course) just use that instance. (I've also fixed unchecked coercion warnings) Please review this at http://coder