nswarm

Thanks @neoeinstein for some great usability changes!

> Would be interested to see how this could be used to, for instance, add an attribute (such as a proc-macro) to a message or a field to modify the...

> There is an underlying need to support unrecognized tags that this should be built upon, and that would eliminate the need to do special work up-front with a registry...

> @nswarm I would be interested in landing some of your work but because I am not the original author of this crate we are gonna need go through a...

Thanks for the comments @andrewhickman! Note that I probably won't do much work on this for a bit, per status in: https://github.com/tokio-rs/prost/issues/674

@LucioFranco Following up, I have some time coming up, would you like me to move ahead some small PRs or would you like to review the design first? I could...

No problem, I'm in no rush. Thanks for getting back to me. I'll let it simmer :)

> * Can `ExtensionImpl` be `Extension`? I think the biggest issue we will face with using `Message` here is that its not object safe. But the work around here is...