Can’t build sphinx doc with py3.10

[alarig]

Hello,

Python 3.10 throws an error about napoleon sphinx:

python3.10 -m sphinx.cmd.build -b html -d docs/_build/doctrees docs docs/_build/html
Running Sphinx v4.5.0

Extension error:
Could not import extension sphinxcontrib.napoleon (exception: cannot import name 'Callable' from 'collections' (/usr/lib/python3.10/collections/__init__.py))

The build config use the old sphinxcontrib.napoleon external extension, it’s has been merge into sphinx 1.3 (upstream is now at 5.0)

[dlyssenko]

Closing with merged PR #232