Merge branch 'develop'

Author: apriha

.github/workflows/ci.yml

@@ -35,7 +35,7 @@ jobs:
     - uses: actions/setup-python@v2
     - name: Install Sphinx
       run: |
-        pip install sphinx sphinx-rtd-theme
+        pip install -r docs/requirements.txt
         pip install .
     - name: Build docs with Sphinx
       run: |