[feature] Automate wheel builds on new releases (#342)

* adding fairseq's gha
* adding py3.9, removing submodules
* yaml linting

.github/workflows/build_wheels.yml

+name: build_wheels
+
+on:
+  push:
+    branches:
+      - v[0-9]+.[0-9]+.[x0-9]+
+    tags:
+      - v*
+
+jobs:
+  build_wheels:
+    name: Build wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.7'
+
+      - name: Install cibuildwheel
+        run: |
+          python -m pip install cibuildwheel
+      - name: Build wheels for CPython
+        run: |
+          python -m cibuildwheel --output-dir dist
+        env:
+          CIBW_BUILD: "cp36-*64 cp37-*64 cp38-*64 cp39-*64"
+          CIBW_MANYLINUX_X86_64_IMAGE: manylinux1
+          CIBW_BEFORE_BUILD: pip install .
+
+      - uses: actions/upload-artifact@v2
+        with:
+          name: wheels
+          path: ./dist/*.whl

pyproject.toml

@@ -28,4 +28,4 @@ use_parentheses = true
 skip_glob = ["build/*", "stubs/*"]
 # Don't split "import" and "from".
 force_sort_within_sections = true
-known_third_party = ["benchmark_dataset", "datasets", "golden_configs", "helpers", "models", "numpy", "pytest", "recommonmark", "setuptools", "torch", "torch_pg", "torchtext", "torchvision"]
+known_third_party = ["benchmark_dataset", "dataclasses", "datasets", "golden_configs", "helpers", "models", "numpy", "pytest", "recommonmark", "setuptools", "torch", "torch_pg", "torchtext", "torchvision"]