automate release creation

.github/workflows/binary-build.yml

@@ -38,7 +38,7 @@ jobs:
 
       - uses: actions/upload-artifact@v4
         with:
-          name: Source tarball
+          name: source_tarball
           path: ${{ github.workspace }}/artifacts/${{ env.release_name }}.tar.gz
 
   binary_build:
@@ -78,3 +78,19 @@ jobs:
         with:
           name: ${{ matrix.config.os }}-${{ matrix.config.r }}
           path: ${{ github.workspace }}/artifacts/${{ env.release_name }}.${{ matrix.config.ext }}
+
+# Workflow derived from https://github.com/marketplace/actions/create-release
+  create_release:
+    needs: [ source_build, binary_build ]
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/download-artifact@v4
+      with:
+        path: artifacts
+    - uses: ncipollo/release-action@v1
+      with:
+        draft: true
+        artifacts: "artifacts/*/*"