rules 2.x

I'm currently working hard on the drupal 7 compatible 2.x version of Rules. So what's new?

• The whole API has been revised, so it's more modular, extensible and easier to use. So now all rule elements (conditions, actions, ORs, ANDs, LOOPs) are reusable components on its own, e.g. a module not interested in Rules could easily reuse just the conditions.
• New rule elements may be contributed by modules. Rules comes now with support for loops (and data lists) too.