Fixed JSONConverter support of empty String.
Added label to EnumEntry.
Updated Storage to generate the value via anonymous function rather than passed value for better efficiency.
Added better toString representation for Version.
Added exclusion for conversion of java.util.Pattern to MongoDB.
Added 'exists' Operator in Datastore.
Added DatastoreQuery.size for a much more efficient way to determine number of results.
Added better support in Datastore for regular expressions (specifically the addition of flags).
Created DatastoreCollection.refresh method to make sure you have the most up-to-date representation of the object.
Added DatastoreCollection.getById for better convenience when you know the id exists.