TEMP Duplicating tests
OGM-469 Unifying retrieval of embedded field values from MongoDB documents
OGM-469 Extracting interfaces for grid operation contexts
OGM-469 Avoiding Hamcrest matchers
OGM-469 Changing GridDialect#isStoredInEntityStructure() to accept key and context specific to the association family only rather than specific to association instances
OGM-625 Avoiding round-trip to the datastore in MongoDBDialect#createAssociation()
OGM-469 Exposing the entity on the current side of an association via AssociationContext
OGM-469 Avoiding re-read of the entity document when retrieving embedded associations
WIP