use the new protobuf package and other minor stuff

Former-commit-id: 29bf71e8a73d34b27c6f5fe3f12c4ea1cc2b84b2

.github/workflows/go.yml

@@ -1,33 +0,0 @@
-name: Go
-on: [push]
-env:
-  GOPROXY: "https://goproxy.io"
-jobs:
-
-  build:
-    name: Build
-    runs-on: ubuntu-latest
-    steps:
-
-    - uses: actions/cache@v1
-      id: cache
-      with:
-        path: ~/go/pkg/mod
-        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-        restore-keys: |
-          ${{ runner.os }}-go-
-
-    - name: Set up Go 1.14
-      uses: actions/setup-go@v1
-      with: 
-        go-version: 1.14
-      id: go
-
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@master
-
-    # - name: Get dependencies
-    #   run: |
-    #     go get -v -t -d ./...
-    - name: Build
-      run: go build -v .