fix: add python 3.9 compatibility

.github/workflows/ci.yml

@@ -30,7 +30,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v2
         with:
-          python-version: 3.8
+          python-version: 3.9
       - uses: abatilo/actions-poetry@v2.1.0
       - name: Install Dependencies
         run: poetry install
@@ -68,6 +68,15 @@ jobs:
           - python: 3.8
             django: ">=3.2,<3.3"
 
+          - python: 3.9
+            django: ">=2.2,<3.0"
+          - python: 3.9
+            django: ">=3.0,<3.1"
+          - python: 3.9
+            django: ">=3.1,<3.2"
+          - python: 3.9
+            django: ">=3.2,<3.3"
+
         os:
           - ubuntu-latest
           # - windows-latest

.github/workflows/labels.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v2
         with:
-          python-version: 3.8
+          python-version: 3.9
       - name: Install labels
         run: pip install labels
       - name: Sync config with Github

README.md

@@ -38,7 +38,7 @@ This version **does not** include any static files, it's using the TinyMCE from
 
 ## Compatibility
 
-- **Python**: 3.6-3.8
+- **Python**: 3.6-3.9
 - **Django**: 2.2-3.2
 
 ## Quick Start

docs/index.md

@@ -6,7 +6,7 @@ The main difference with the original fork is that it **does not** include any s
 
 ## Compatibility
 
-- **Python**: 3.6-3.8
+- **Python**: 3.6-3.9
 - **Django**: 2.2-3.2
 
 ## License