Implementations of RFC 8297 (Early Hints) in Go

Hi folks,

I published patches qadding support for the 103 status code (RFC 8297) to
the Go programming language. HTTP 1.1, HTTP/2 and HTTP/3 are supported.

I published a blog post explaining how to use these patches:
https://dunglas.fr/2021/02/using-the-103-early-hints-status-code-in-go-applications/

And here are the patches themselves:
HTTP/1.1: https://github.com/golang/go/pull/42597
HTTP/2: https://github.com/golang/net/pull/96
HTTP/3: https://github.com/lucas-clemente/quic-go/pull/3047

Reviews and tests would of course be greatly appreciated!

Best regards,
-- 
Kévin Dunglas

https://dunglas.fr
Twitter: @dunglas <https://twitter.com/dunglas>