np.int used in PyPi release 0.7.3

If you install the latest version of insightface's python package via PyPi (version 0.7.3), it still uses `np.int` as a type. [This has been fixed in Master for several months now.](https://github.com/deepinsight/insightface/blob/0cb03d391bb9335821448ce6e0519dbc870ec68d/python-package/insightface/app/face_analysis.py#L84).

`np.int` is no longer supported by `numpy`, so the package does not work with newer versions of numpy.

In order to use the `insightface` python package today -- one must either download and older version of `numpy` or install the python package from source. Both solutions are quite inconvenient.