automatically inform authors of GitHub issues about new releases (#2685)

.github/workflows/code_test.yml

@@ -0,0 +1,40 @@
+name: code_test
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test_64:
+    runs-on: ubuntu-22.04
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - run: make test
+
+    - uses: codecov/codecov-action@v3
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
+
+  test_32:
+    runs-on: ubuntu-22.04
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - run: make test32
+
+  test_highlevel:
+    runs-on: ubuntu-22.04
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - uses: actions/setup-go@v2
+      with:
+        go-version: "1.21"
+
+    - run: make test-highlevel-nodocker