Backport GitHub workflows to 1.2 branch

.github/workflows/pythonapp.yml

@@ -0,0 +1,31 @@
+name: Python application
+on: [push, pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python 3.x
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.x
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt -r requirements-dev.txt
+    - name: Lint with flake8
+      run: |
+        # stop the build if there are Python syntax errors or undefined names
+        flake8 --count pgzero pgzrun.py test
+    - name: Install xvfb
+      run: |
+          sudo apt-get install xvfb
+    - name: Run tests under xvfb
+      run: |
+        xvfb-run --auto-servernum python setup.py test
+    - name: Cleanup xvfb pidx
+      uses: bcomnes/cleanup-xvfb@v1
+    - uses: actions/upload-artifact@master
+      with:
+          name: failed-image
+          path: test/failed-image

.github/workflows/wheels.yml

@@ -0,0 +1,45 @@
+name: "Build Wheels"
+
+on:
+  workflow_dispatch:
+  push:
+  release:
+    types:
+    - published
+
+jobs:
+  buildpackage:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - uses: actions/setup-python@v2
+      with:
+        python-version: 3.8
+
+    - name: Install wheel and SDist requirements
+      run: python -m pip install "setuptools>=42.0" wheel twine
+
+    - name: Build SDist
+      run: python setup.py sdist bdist_wheel
+
+    - uses: actions/upload-artifact@v2
+      with:
+        path: |
+            dist/*.tar.gz
+            dist/*.whl
+
+  publish:
+    needs: [buildpackage]
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+
+    steps:
+    - uses: actions/download-artifact@v2
+      with:
+        name: artifact
+        path: dist
+
+    - uses: pypa/gh-action-pypi-publish@master
+      with:
+        user: __token__
+        password: ${{ secrets.pypi_password }}