Remove trailing comma
Avoid Observable processing when there is no data
Fix DstoreAdapter range query and result total
Support accessors in getIdentity and _setIdentity
Remove queryer cruft from Memory#fetch
Fix objectQueryEngine to use get/set interfaces when they exist

Also fixes objectQueryEngine to properly sort Dates.
Fix objectQueryEngine to only call valueOf on non-null
Add queryEngine support to DstoreAdapter
Add queryEngine testing TODO
Add hidden properties extension
Add tests for HiddenProperties, fix JSON serialization
Ensure that sub-objects have their properties set properly
Order getIdentity so that it can be reliably called against restored objects
document HiddenProperties
Remove unnecessary getIdentity impl