Use github actions instead of travis (#36)

.github/workflows/pr.yml

@@ -0,0 +1,48 @@
+name: PR
+
+on:
+  pull_request:
+    branches: [ master ]
+
+
+jobs:
+  gomod:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go: [
+          '1.18',
+          '1.17',
+          '1.16',
+          '1.15',
+          '1.14',
+          '1.13',
+        ]
+    name: Go ${{ matrix.go }}.x PR Validate
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Setup Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go }}
+      - name: Version
+        run: go version
+      - name: Build and Validate
+        run: |
+          go vet .
+          go test .
+          go test -cover -race -cpu 1,2,4 .
+          go build .
+
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          version: v1.45
+          only-new-issues: true
+