Bump version checks to work with new python 3.6
MODIFY
tests/venv/default/verify
tests/venv/default/verify
# Verify that the default just provides a py3 environment with jupyter
import sys
-assert sys.version_info[:2] == (3, 5)
+assert sys.version_info[:2] == (3, 6)
import jupyter

MODIFY
tests/venv/numpy/verify
tests/venv/numpy/verify
#!/usr/bin/env python
import sys
-assert sys.version_info[:2] == (3, 5)
+assert sys.version_info[:2] == (3, 6)
import numpy

Bump version checks to work with new python 3.6