Support protobuf 3.0.0

[normanmaurer]

Hey there,

is there any plan to support protobuf 3.0.0 ? Seems like it not support it atm.

[matiasinsaurralde]

That would be awesome 🙏

[daurnimator]

The new features are outlined here: https://github.com/google/protobuf/releases/tag/v3.0.0