Update travis config to point to Cython at 449a48ecd5b131ff37636accc48ec57e94e1c56e.
Update travis config to point to Cython at 449a48ecd5b131ff37636accc48ec57e94e1c56e.
cython-testbed/pandas,cython-testbed/pandas,cython-testbed/pandas,cython-testbed/pandas,cython-testbed/pandas