Suggestion: Add information of gogo/protobuf version as a comment in generated go source files.

[c-bata]

Hi. First, I want to say thank you for developing. This go source files generator is really flexible.

When I reviewed pull requests including changes of *.pb.go, It's difficult to identify what's gogo/protobuf version is used when generating *.pb.go from the diffs. Perhaps my colleague generated by using old version of gogo/protobuf. That's why I opened this suggestion.

But I know we can't change the outputs of previous versions because the consistency of generated files are really important in this project. So I suggest this for future releases.

How do you feel about this suggestion?
Thanks.

[awalterschulze]

What do you think about this issue on golang/protobuf
golang/protobuf#524

We would most probably merge a change they make there.
If you take your request there, then gogoprotobuf can stay more consistent with its origin.
Would you mind?

[c-bata]

I think your thought is more reasonable than me. Thanks for your quick response 👍

[awalterschulze]

My pleasure and good luck :)