base on the python version

[rnons]

will work directly on the v2 branch after this, thanks

[tulir]

I don't like the way protobuf embeds binary as hex in the generated go file, so I use --go_opt=embed_raw=true from https://go-review.googlesource.com/c/protobuf/+/369634 to have it in a separate binary file (see 3c9a756). In case you need to modify the protobuf schema, you can build protoc-gen-go to have that flag:

git clone --single-branch --branch v1.35.2 https://github.com/protocolbuffers/protobuf-go.git
cd protobuf-go
git fetch https://go.googlesource.com/protobuf refs/changes/34/369634/2
git cherry-pick FETCH_HEAD
go install ./cmd/protoc-gen-go/