[winswitch] [ANNOUNCE] Xpra LTS 5.1.2

[Antoine Martin]

Hi,

This update to the LTS branch is a large one and it contains fixes for 
some important security issues which could be exploited to leak 
sensitive information.
Anyone concerned about the remaining risks of the debug control channel 
may choose to run their servers with XPRA_CONTROL_DEBUG=0 to completely 
disable the feature.
The MacOS builds are available again, which required a fair amount of 
tweaks.
The network changes mostly revolve around SSL issues, the most important 
of these was a seemingly random disconnection bug.

Upgrading is strongly recommended.

For the full list of changes, see the v5.1.2 release notes:
https://github.com/Xpra-org/xpra/releases/tag/v5.1.2
The download links and installation instructions can be found here:
https://github.com/Xpra-org/xpra/wiki/Download

Cheers,
Antoine