message: not showing stack traces for 404 errors
diff: @@ -65,15 +65,20 @@ var handler = function(err, req, res, next) {
  }
  }
  + // Don't show stack trace if it is a 404 error
  + if (err.code === 404) {
  + err.stack = null;
  + }
  +
  var statusCode = typeof err.code === 'number' ? err.code : 500;
  res.status(statusCode);
  if (req.app.logger && typeof req.app.logger.error === 'function') {
  - req.app.logger.error(req.url, err.stack || err);
  + req.app.logger.error(err.code, req.url, err.stack || err);
  }
  else if (typeof req.app.error === 'function') {
  - req.app.error(req.url, err.stack || err);
  + req.app.error(err.code, req.url, err.stack || err);
  }
  res.format({
  