moving test requirements to setup.py
fixing deps install on Travis
errors_in_topic_vows.py (minor): Inherit from Vows.Context
errors_in_topic_vows.py (minor): One more inheritance fix
tests/*: Everything is executable, dammit!!!
Revert "errors_in_topic_vows.py (minor): Inherit from Vows.Context"

This reverts commit 0ea69de93abfe07ea5943942cbac59aaa71fac89.