@TODO: Add an option to allow module CSS development.
@TODO: Re-write module to make patching core easier. Add an ie_css_optimizer_get_css() that can be used as a drop-in replacement for drupal_get_css().
The code should be bug free. It is not yet feature-complete though. I will be attempting to add an option for module CSS development; the current -dev only has an option for theme CSS development.