PhpRules, a rules engine for Php

This engine is not my creation : it is taken from an (almost stalled) project for CodeIgniter named PhpRules and can be found on http://www.swindle.net/php-rules/

My work is :

• Debug (i.e Activity doesn't parse )
• Remove CodeIgniter dependancies (who can use a framework without namespace anymore ?)
• Move to Php 5.3 with namespaces and remove old php keywords (var...)
• Autoloader for classes
• Documentation
• Optionnaly making a bundle for Symfony2