Glad to hear :) I must admit that protobuffers v2 might be best for configurations files, given that they have the "required" keyword on fields and the generate

Glad to hear :) I must admit that protobuffers v2 might be best for configurations files, given that they have the "required" keyword on fields and the generated code has methods like "hasFieldX() -> bool" which proto v3 dropped in favor of simplicity.