Spent some quality time today on building features for protopiler that I originally resolved not to do:

- map support
- rpc support
- custom option support (I did not fully do it, but at least it doesn't throw)

All of them were kind of fun to do and I have a practical need for them at work already!

https://codeberg.org/indutny/protopiler/compare/v3.2.4...v4.0.0