[winswitch] [ANNOUNCE] Xpra 6.0

[Antoine Martin]

Hi,

This new major release is a clean break and it is only meant to be fully 
compatible with version 5.x LTS onwards, though it is usually possible 
to connect to and from versions from older branches as long as they are 
reasonably up to date.

The changelog is quite short but there are actually a lot of significant 
changes in this release.
The codebase has been thoroughly cleaned up, and made much more much 
robust and future-proof.
Various static and runtime type checkers have really helped in 
tightening the API and found numerous bugs along the way - most of which 
have already landed in the LTS branch.

The switch to OpenGL core profile for accelerated rendering is the one 
change most likely to cause regressions on some platforms / GPU / 
drivers / displays - as testing every combination is just impossible.
Please report any issues and try `--opengl=no` if needed.
For the same reason, the new GPU accelerated encoders via GStreamer 
might cause problems on some systems, use 
`--video-encoders=all,-gstreamer` if that's the case.

Most builds are already available, the arm64, riscv should be available 
later. The status of the MacOS builds is less clear.

For more details, please see:
https://github.com/Xpra-org/xpra/releases/tag/v6.0

Downloads:
https://github.com/Xpra-org/xpra/wiki/Download

Cheers,
Antoine