test query in DaoArray.
assume all data are arrays; remove set/get.
maybe a Query class to eliminate the need for the method list?
functional test on DaoEntity.
slightly improved code completion by Eloquent dummy class?
include new test for DaoEntity; remove old test on old Dao.
delete obsolete Datum stuff; DaoEntity takes over the concept.
remove obsolete test (DaoWoConverter_UnitTest); remove __call @methods list; suppress warnings.