add gh-actions upload pypi on release

.github/workflows/main.yml

@@ -8,7 +8,7 @@ jobs:
       - name: checkout source repo
         uses: actions/checkout@v2      
       - name: Set up Python environment
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v2
         with:
           python-version: "3.8"
       - name: linting flake8

.github/workflows/upload-to-pypi.yml

@@ -0,0 +1,43 @@
+# This is a basic workflow to help you get started with Actions
+
+name: Upload to PIP
+
+# Controls when the action will run. 
+on:
+  # Triggers the workflow when a release is created
+  release: 
+    types: [created]
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "upload"
+  upload:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v2
+
+      # Sets up python
+      - uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+
+      # Install dependencies
+      - name: "Installs dependencies"
+        run: |
+          python3 -m pip install --upgrade pip
+          python3 -m pip install setuptools wheel twine
+
+      # Build and upload to PyPI
+      - name: "Builds and uploads to PyPI"
+        run: |
+          python3 setup.py sdist bdist_wheel
+          python3 -m twine upload dist/*
+        env:
+          TWINE_USERNAME: __token__
+          TWINE_PASSWORD: ${{ secrets.PYPITOKEN }}