Drupal Sandbox Project: CAS Username Link

I've just finished working on a new Drupal Sandbox Project: CAS Username Link This project came about while working on a Single Sign On (SSO) solution. The product I was checking out was CAS. Low and behold, CAS has a Drupal module, aptly named: CAS. After fiddling around with module and having it not working for a while, I finally realized that each existing Drupal account needed to have a CAS username linked to it. This could be done manually on the user configuration screen, or by running a bulk update on the database to populate the cas_user table. This wasn't going to work for me since...