Update travis config to point to Cython at a0f44623091d4da88e811ccde804693e3519583e.
Update travis config to point to Cython at a0f44623091d4da88e811ccde804693e3519583e.
cython-testbed/pandas,cython-testbed/pandas,cython-testbed/pandas,cython-testbed/pandas,cython-testbed/pandas