Lightweight secure authentication library

[eluser]Ordos[/eluser]
I have been working on a secure authentication library for Codeigniter. I don't like huge authentication libraries that handle all methods your user models should handle. So I decided to create 1 secure library that is easily expanded to the needs of the website in question.

You can find the code on github, as well as documentation/information.

It uses phpass to hash passwords and 1-use-only autologin keys.

I'm looking forward to suggestions!