Build linux and macOS wheels on GitHub Actions. (#409)

.github/workflows/linux.yml

@@ -0,0 +1,67 @@
+name: Build Linux Wheels
+on:
+  push:
+  pull_request:
+  create:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.8
+
+      - name: Cythonize
+        shell: bash
+        run: |
+          pip install -U pip
+          pip -V
+          pip install -r requirements.txt
+          make cython
+          #python setup.py sdist
+
+      - name: Build wheels
+        shell: bash
+        run: |
+          make linux-wheel
+
+      - name: Run test (3.8)
+        run: |
+          pip install pytest
+          pip install -v msgpack --only-binary :all: --no-index -f dist/wheelhouse
+          pytest -v test
+
+
+      - name: Set up Python 3.7
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+
+      - name: Run test (3.7)
+        run: |
+          pip install pytest
+          pip install -v msgpack --only-binary :all: --no-index -f dist/wheelhouse
+          pytest -v test
+
+      - name: Set up Python 3.6
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.6
+
+      - name: Run test (3.6)
+        run: |
+          pip install pytest
+          pip install -v msgpack --only-binary :all: --no-index -f dist/wheelhouse
+          pytest -v test
+
+
+      - name: Upload Wheels
+        uses: actions/upload-artifact@v1
+        with:
+          name: linux-wheels
+          path: ./dist/wheelhouse/