Cleanup db on start. If you ^C a test, the db doesn't get cleaned up properly. This results in errors when running a test manually. Add a class method to postgresqlOpener. setup_class runs once when the class is initialized.

#!/usr/bin/env python
from __future__ import print_function
import zlib, base64, sys
print(base64.encodestring(zlib.compress(sys.stdin.read())))