fetchSubObj. To be tested. Documentation to be completed
fetching subobj works + tests. Only fetchValues has problems because it needs to concat. Solution: returns many arrays each with the values of the property
preliminary fetchValues working...refactoring defaults now
working on harmonizing various fetching
fetchValues always returns objects. fetchArray and fetchKeyedArray operates only on the first level, and objects in properties are not further flattened
0.6.0