Add github action to publish to pypi on new tag

.github/workflows/main.yml

@@ -2,14 +2,15 @@ name: Check test and code linting
 on: [push]
 
 jobs:
-  pre-commit:
+  lint:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
     - uses: pre-commit/[email protected]
 
-  build:
+  test:
     runs-on: ubuntu-20.04
+    needs: lint
     strategy:
       matrix:
         include:
@@ -31,3 +32,26 @@ jobs:
           pip install tox codecov
       - name: Run tests
         run: tox -e ${{ matrix.tox || 'py' }}
+
+    publish:
+      needs: test
+      if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+      steps:
+        - uses: actions/checkout@master
+        - name: Set up Python 3.11
+          uses: actions/setup-python@v3
+          with:
+            python-version: "3.11"
+
+        - name: Install dependencies
+          run: |
+            python -m pip install --upgrade pip
+            pip install setuptools wheel twine
+
+        - name: Build and publish
+          env:
+            TWINE_USERNAME: __token__
+            TWINE_PASSWORD: ${{ secrets.PYPI_TOKEN }}
+          run: |
+            python setup.py sdist bdist_wheel
+            twine upload dist/*