[winswitch] [ANNOUNCE] Xpra LTS 3.1.3 : accumulated fixes

[Antoine Martin]

Hi,

This update to the LTS+1 branch includes all the fixes that had 
accumulated over the past 8 months since the 3.1.2 release.
There are a lot of fixes in there and some are quite important.

But please bear in mind that unless your OS is unable to run newer 
versions (ie: Python2 systems like CentOS 7.x), you should not be 
running this version in production.
The MacOS builds are still in reasonably good shape since we control the 
full set of libraries used on that platform.
The MS Windows builds are now locked with whatever library versions were 
available during the last MSYS2 update that was still compatible with 
this branch.
Only the "client" builds can still be generated on MS Windows. I chose 
to continue to include these builds because they can still be useful 
when checking for regressions.
A new LTS version will replace this branch, hopefully by the end of the 
year, at which point the 3.x series will be abandoned.

The more detailed release notes can be found here:
https://github.com/Xpra-org/xpra/releases/tag/v3.1.3

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

Cheers,
Antoine