add a GitHub release workflow

.github/workflows/release.yml

@@ -0,0 +1,51 @@
+name: Release
+
+on:
+  push:
+    tags:
+    - '*'
+
+jobs:
+  build:
+    name: Upload Release Asset
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Python
+        uses: actions/setup-python@v2
+
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Build
+        run: |
+          pip install Cython
+          python setup.py sdist
+          
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: ${{ github.ref }}
+          draft: false
+          prerelease: false
+
+      - name: Get Name of Artifact
+        run: |
+          ARTIFACT_PATHNAME=$(ls dist/g6k-*.tar.gz | head -n 1)
+          ARTIFACT_NAME=$(basename $ARTIFACT_PATHNAME)
+          echo "ARTIFACT_NAME=${ARTIFACT_NAME}" >> $GITHUB_ENV
+          echo "ARTIFACT_PATHNAME=${ARTIFACT_PATHNAME}" >> $GITHUB_ENV
+          
+      - name: Upload Release Asset
+        id: upload-release-asset 
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ${{ env.ARTIFACT_PATHNAME }}
+          asset_name: ${{ env.ARTIFACT_NAME }}
+          asset_content_type: application/gzip

setup.py

@@ -102,7 +102,7 @@ def read_from(filename, field, sep):
 ]
 
 setup(
-    name="G6K",
+    name="g6k",
     description="General Sieve Kernel",
     version=__version__,
     url="https://github.com/fplll/g6k",