List, GroupedList: fixed issue where typical item renderer was pulled from the cache, which could pull an item renderer already used for another item
List, GroupedList: added checks for null data provider
Builds: added Ant targets for install on Android and iOS
Optimized FeathersControl auto-validation. Controls are pushed to queue when added. They are only sorted when time is advanced, but with depth instead of using contains() (closes #650)