> I'm wary of slowing it down by adding lots of features. I think that, generally speaking, _more_ purpose-built binary formats should exist. It is a valid poi

> I'm wary of slowing it down by adding lots of features. I think that, generally speaking, _more_ purpose-built binary formats should exist. It is a valid point, yes. However, my mention was meant to mean that unknown fields can be easily skipped.