Please add a baseUrl

[stevenvachon]

For relative paths, just like grunt-contrib-requirejs. It would make it easier to customize things without the need for a customize normalizer, which is probably best for more advanced customizations.

[daffl]

This should be as trivial as adding

var normalizer = configuration.normalizer || function (filename) {
  var relative = configuration.baseUrl || path.dirname(configuration.out);
  return path.relative(relative, filename);
};

in https://github.com/daffl/can-compile/blob/master/lib/index.js#L12. I'll gladly accept a pull request that adds this functionality and a test for it.