Adding upstream version 3.5.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

.github/workflows/macos-latest.yml

@@ -0,0 +1,26 @@
+name: Macos-latest
+
+on: [push, pull_request]
+
+jobs:
+
+  build-and-test:
+  
+    strategy:
+      matrix:
+        go-version: [1.13, 1.17]
+    runs-on: macos-latest
+    steps:
+    - name: Install Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: ${{ matrix.go-version }}
+
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Build
+      run: go build cmd/arc/main.go
+
+    - name: Test
+      run: go test -v ./...