Switch to GitHub Actions

.github/workflows/go.yml

@@ -0,0 +1,31 @@
+---
+name: Go
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  schedule:
+    - cron: '42 3 * * 4'
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-20.04
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Install Go tip
+        run: |
+          sudo rm -fr /opt/hostedtoolcache/go /usr/local/go /usr/bin/go /bin/go
+          curl -o go.tar.gz -L \
+            https://github.com/AlekSi/golang-tip/releases/download/tip/master.linux-amd64.tar.gz
+          sudo tar -C /usr/local -xzf go.tar.gz
+          sudo ln -s /usr/local/go/bin/* /usr/local/bin/
+          go version
+          rm go.tar.gz
+
+      - name: Run tests
+        run: go test -v