add explicity support for py3.8 back

.github/workflows/main.yml

@@ -6,9 +6,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: ["3.9", "3.10", "3.11"]
+        python: ["3.8", "3.9", "3.10", "3.11"]
         os: [ubuntu-latest, windows-latest, macos-latest]
         include:
+          - python: "3.8"
+            tox_env: "py38"
           - python: "3.9"
             tox_env: "py39"
           - python: "3.10"
@@ -35,7 +37,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
-        python-version: "3.9"
+        python-version: "3.8"
     - name: Install tox
       run: |
         python -m pip install --upgrade pip setuptools
@@ -52,7 +54,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v2
         with:
-          python-version: "3.9"
+          python-version: "3.8"
       - name: Install wheel
         run: |
           python -m pip install --upgrade pip setuptools

setup.cfg

@@ -14,6 +14,7 @@ classifiers=
     Intended Audience :: Developers
     License :: OSI Approved :: MIT License
     Operating System :: OS Independent
+    Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
@@ -23,7 +24,7 @@ classifiers=
 
 [options]
 packages = find:
-python_requires = >= 3.9
+python_requires = >= 3.8
 
 [options.packages.find]
 exclude = docs, tests