Try to create artifacts (#61)

.github/workflows/build-wheels.yml

@@ -31,4 +31,30 @@ jobs:
 
       - uses: actions/upload-artifact@v2
         with:
-          path: ./wheelhouse/*.whl
+          path: ./wheelhouse/*.whl
+
+  build_sdist:
+    name: Build source distribution
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Build sdist
+        run: python setup.py sdist
+
+      - uses: actions/upload-artifact@v2
+        with:
+          path: dist/*.tar.gz
+
+  store_tag_artifacts:
+    needs: [build_wheels, build_sdist]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v2
+        with:
+          name: artifact
+          path: dist
+      - uses: softprops/action-gh-release@v1
+        with:
+          files: dist/*
+