Import documentation from 2.1.x

.github/workflows/generate-documentation.yml

@@ -0,0 +1,15 @@
+name: Generate documentation
+on:
+  push:
+    paths:
+    - DOCUMENTATION.md
+
+jobs:
+  generate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: gh-pages
+      - name: Run generator
+        run: documentation-tools/generate.py

.github/workflows/test.yml

@@ -43,7 +43,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v1
         with:
-          python-version: 3.8
+          python-version: 3.x
       - name: Install Coveralls
         run: python -m pip install coveralls
       - name: Call Coveralls parallel builds webhook