implemented serializing tuples
serializing rightTuples implemented
serializing tuples and freeing memory
support for parent-tuple relationship
implemented handling facts in db, saving, removing operations by API exposed
supporting modifying facts
improved jdbc manager API, added upsert for left tuples
base retracting right tuples
corrected  upserting left tuples
code cleanups
code cleanups
improved saving handles, cleanups
split update and insert into one transaction
Removed unnecessary files, improved reading writing objects.
Merge branch 'serial-tuples'