* use self.c rather than self.__dict__ for SQLAlchemy fields
* make Record._ignore, Owner.get* classmethods
* fold FormattableRecord, NullableRecord into Record
* shorten types in lists to __name__
* use self.c rather than self.__dict__ for SQLAlchemy fields
* make Record._ignore, Owner.get* classmethods
* fold FormattableRecord, NullableRecord into Record
* shorten types in lists to __name__