diffie-helman: update tests to v1.0.0 (#1398)
diffie-helman: update tests to v1.0.0 (#1398)


exercism/python,smalley/python,smalley/python,N-Parsons/exercism-python,exercism/python,behrtam/xpython,exercism/xpython,exercism/xpython,N-Parsons/exercism-python,jmluy/xpython,jmluy/xpython,behrtam/xpython