Set X-Clacks-Overhead to keep Terry Pratchett in the network

[nottrobin]

From https://xclacksoverhead.org/home/about:

In Sir Terry's novel "Going Postal", the story explains that the inventor of the Clacks - a man named Robert Dearheart, lost his only son in a suspicious workplace accident, and in order to keep the memory of his son alive, he transmitted his son's name as a special operational signal through the Clacks to forever preserve his memory:

GNU John Dearheart

G: Send the message onto the next Clacks Tower.

N: Do not log the message.

U: At the end of the line, return the message.

The nature of the 'GNU' code would keep the name of his son forever transmitting through The Clacks network so long as the network still existed.

"A man is not dead while his name is still spoken."

...

At the time of writing, Mozilla.org (makers of the Firefox web browser), the makers of Debian (a popular Linux Operation System), and Xml.com (a major repository of standards information) are examples of some of the backbones of the Internet who transmit the Signal "GNU Terry Pratchett". The Internet news website The Register also transmits headers to commemorate both Sir Terry Pratchett and one of their staffers; Lester Haines.

[0atman]

Good man.

[jkfran]

GNU Terry Pratchett

[jkfran]

@nottrobin update the version number to release

[nottrobin]

@nottrobin update the version number to release

I thought that might be overkill, making people do a bunch of renovate PRs just for this. I was gonna let it go out with the next real change whatever that is.