Is this project still maintained? (I want to submit a PR for Protobufs)

[dstahl-axion]

Hi, I wanted to see if this project was still maintained?

I noticed that your protocol buffer formatters will let me specify a Surrogate for the Incoming types, but the outgoing formatters do not have such an option. Our project returns an object with a DateTimeOffset and requires a surrogate to serialize it. I've got working code that copies your surrogate configuration from the Input formatter to the Output formatter. If there's interest, I'm happy to submit a PR for it.