message: louder errors in dev server
diff: @@ -17,5 +17,11 @@ module.exports = {
  makeServer(seedModels).then(server => {
  app.use('/cardstack', server.callback());
  });
  +
  + // Without this node 7 swallows stack traces within the native
  + // promises I'm using.
  + process.on('warning', (warning) => {
  + process.stderr.write(warning.stack);
  + });
  }
  };
  