Michael Krause

Do I understand you correctly that you are in favor of enabling these forward decls unconditionally - and accepting compilation problems on old Visual Studio versions? If yes, I can...

> [...] would you be able to add a job for C++20 compatibility given our infrastructure? I am not sure what exactly this involves -- extend `azure-pipelines.yml`, and that's it?...

> your patch also seems trivial to wrap in `ifdefs` to have compatibility C++ before 11. The question is whether this is necessary: you have #511 on your revival checklist,...