Enhance GitHub Actions workflow to support multiple Python versions a…

…nd include twine for package publishing

.github/workflows/pypi.yml

@@ -16,31 +16,36 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-python@v2
-      with:
-        python-version: 3.9
-
-    - name: Install dependencies
-      run: >-
-        python -m pip install --upgrade setuptools wheel
-    - name: Build
-      run: >-
-        python setup.py sdist bdist_wheel
-    # We do this, since failures on test.pypi aren't that bad
-    - name: Publish to Test PyPI
-      if: startsWith(github.event.ref, 'refs/tags') || github.event_name == 'release'
-      uses: pypa/gh-action-pypi-publish@release/v1
-      with:
-        user: __token__
-        password: ${{ secrets.TEST_PYPI_API_TOKEN }}
-        repository-url: https://test.pypi.org/legacy/
-
-    - name: Publish distribution 📦 to PyPI
-      if: startsWith(github.event.ref, 'refs/tags') || github.event_name == 'release'
-      uses: pypa/gh-action-pypi-publish@release/v1
-      with:
-        user: __token__
-        password: ${{ secrets.PYPI_API_TOKEN }}
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: >-
+          python -m pip install --upgrade setuptools wheel twine
+
+      - name: Build
+        run: >-
+          python setup.py sdist bdist_wheel
+
+      # We do this, since failures on test.pypi aren't that bad
+      - name: Publish to Test PyPI
+        if: startsWith(github.event.ref, 'refs/tags') || github.event_name == 'release'
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          user: __token__
+          password: ${{ secrets.TEST_PYPI_API_TOKEN }}
+          repository-url: https://test.pypi.org/legacy/
+
+      - name: Publish distribution 📦 to PyPI
+        if: startsWith(github.event.ref, 'refs/tags') || github.event_name == 'release'
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}