- fix the print issue when no records are fetched
- add proxy to get the rowcount and inserted primary key
- fix the bug that the row.to_dict(), 'list' object is not callable error
- fix bug #27, #28
- give the error details when execute transaction
- fix bug and enhancement #32 #33
- compatible the metadata changes(remove reflect param when init metadata) in sqlalchemy
- convert the RMKeyView object to list to compatible the 1.4+
- solve the pending rollback issue when inner sql execution has the error