[winswitch] project management changes needed

[Antoine Martin]

Hi,

Xpra is being used extensively for critical deployments, worldwide, by 
individuals as well as some of the most prestigious organizations on the 
planet.

Unfortunately, it seems that very few actually want to contribute to the 
project and this means that the project's funding has not been 
sustainable for a while.
I was hoping that at least some of the more serious enquiries would 
eventually lead somewhere, but it seems they all assumed that someone 
else would.

Unless things improve in the next few months, I intend to:
* archive the mailing list and switch over to github discussions,
* move all the package downloads to a third party hosting service (TBD),
* redirect xpra.org to github,
* finally release version 5.0 and a few minor updates after that,
* give commit, release and key privileges to more contributors,
* decommission the hardware currently hosting a lot of these services,
* step down as maintainer

Despite my best efforts to welcome contributions to the project and make 
the codebase more approachable, it seems unlikely that anyone will be 
able to take over in the short term.
It is slightly frightening to think that users will be left with the 
already sub-par downstream packaging for a project of this importance 
and size.
I do feel guilty for this messy state of affairs, so I will gladly 
listen to any suggestions on how best to protect the future of this 
project before I move on.

No matter what happens in the next few weeks / months, I would like to 
take this opportunity to thank all past and present sponsors, and all 
those who have helped the project until now through contributions of any 
kind.
https://github.com/Xpra-org/xpra/blob/master/docs/SPONSORS.md
https://github.com/sponsors/totaam

Cheers,
Antoine