Add github actions

.github/workflows/ci.yml

@@ -0,0 +1,47 @@
+name: Go
+
+on: [push, pull_request]
+
+env:
+  GO11MODULE: on
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Set up Go
+      uses: actions/setup-go@v2-beta
+      with:
+        go-version: '^1.7'
+
+    - name: Check out code
+      uses: actions/checkout@9a3a9ade
+      with:
+        submodules: true
+
+    - name: Clean up extra files
+      run: rm ./testcases/*.go
+
+    - name: Run golangci-lint
+      uses: actions-contrib/golangci-lint@v1
+      env:
+        GOROOT: ''
+      with:
+        golangci_lint_version: 'v1.23.6'
+
+    - name: Download deps
+      run: go mod download
+
+    - name: Run tests
+      run: go test -race -v ./...
+
+    - name: Submit coverage report
+      env:
+        COVERALLS_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      run: |
+        go test -covermode=count -coverprofile=profile.cov
+        GO111MODULE=off go get github.com/mattn/goveralls
+        $(go env GOPATH)/bin/goveralls -coverprofile=profile.cov -service=github
+