If you're new to this module, keep your eyes on workflow -- as we plan to add an access control package soon. In most cases, og_actions is less powerful than workflow access - though not all. I think there is still a need for og_actions, so it will be maintained, rest assured.
Maybe not ready for prime time, but worth checking out.
The version has added the ability to target multiple image buttons with the same class (needed by views_ui), refined the technique for only reattaching bindings to the html that has been replaced, and added a prototype for system-wide js->js binding declarations.