Create Scheme protocol, refactor to use this protocol instead of DBCoding
Working on scheme
DBScheme seems to works
Minor fixies
Start working on totally new API
Saving to database with new code works
Move relations to schema, instead of entity
one-to-one relation tested
one-to-one circular relations fixies
Added ability to fetch objects
Parent relations tested and bugfixed
Implement ChangeRule for to-one relations