Build wheels on GitHub Actions

.github/workflows/wheels.yml

@@ -0,0 +1,31 @@
+name: Wheels
+on: [push, pull_request]
+
+jobs:
+  wheels:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python_version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9]
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+        name: Install Python ${{ matrix.python_version }}
+        with:
+          python-version: ${{ matrix.python_version }}
+
+      - name: Install cibuildwheel
+        run: |
+          python -m pip install cibuildwheel
+      - name: Install Visual C++ for Python 2.7
+        if: runner.os == 'Windows'
+        run: |
+          choco install vcpython27 -f -y
+      - name: Build wheels
+        run: |
+          python -m cibuildwheel --output-dir wheelhouse
+      - uses: actions/upload-artifact@v2
+        with:
+          path: ./wheelhouse/*.whl