Upgrade "with" module to 1.0.3.

Your [last commit](https://github.com/visionmedia/jade/commit/939bf3fe1e79f1ec15c3f385214f510567f30b71) broke the tests by switching to `with` version 1.0.0. They probably fixed some bug between 1.0.0 and 1.0.3; upgrading fixes all the failing tests.