Thank you for your interest in our tools. Unfortunately the "Pan, zoom and rotate" functionality has not been added yet.
Our 2015 roadmap includes making our Windows Phone 8 ImageEditor available on the new Windows Runtime. You can vote for this feedback item
in order to increase its priority.
Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.