No issue. Release 0.9.1

Author: reckart

.github/workflows/publish_to_pypi.yml

@@ -24,7 +24,7 @@ jobs:
         python setup.py sdist
     - name: Publish package to TestPyPI
       if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
-      uses: pypa/gh-action-pypi-publish@master
+      uses: pypa/gh-action-pypi-publish@release/v1
       with:
         user: __token__
         password: ${{ secrets.test_pypi_password }}