error importing face_alignment

Hello @1adrianb,
I was trying to import the package and not sure why this is happening. I think is from the scikit-image side but then there might be a version requirement to set to make it still work

```
import face_alignment
lib/python3.8/site-packages/face_alignment/__init__.py:7: in
from .api import FaceAlignment, LandmarksType, NetworkSize
lib/python3.8/site-packages/face_alignment/api.py:4: in
from skimage import io
lib/python3.8/site-packages/skimage/__init__.py:135: in
from .data import data_dir
lib/python3.8/site-packages/skimage/data/__init__.py:64: in
from pooch.utils import file_hash
E ImportError: cannot import name 'file_hash' from 'pooch.utils' (/lib/python3.8/site-packages/pooch/utils.py)
```