PubSubHubbub Core 0.4: X-Hub-Signature

Hi,


Why is "X-Hub-Signature" prefixed with "X-"?
Isn't that considered bad practice now?

RFC 6648: Deprecating the "X-" Prefix and Similar Constructs in
Application Protocols
https://tools.ietf.org/html/rfc6648

-- 
Regards/Mit freundlichen Grüßen
Christian Weiske

-=≡ Geeking around in the name of science since 1982 ≡=-