data-binding: removed unneeded call to proxy.set for nested bindables
Implemented ERRAI-457: A single DataBinder instance should support binding a bean property to multiple widgets
Merge branch 'master' into 3.0
add more tests for the async bean manager.
introduce new AsyncBeanQuery API to make loading multiple beans asynchronously less of a pain.
add JavaDoc to AsyncBeanQuery
fixes to async bean manager. not properly registering aliased beans when there is a loading delay.
singleton constructors must double-check to ensure that singletons have not been constructed asynchronously to assure cyclical graphs are built correctly when out-of-order loads occur.
only produce code to guard against out-of-order loads if the type is actually part of a cycle