[winswitch] [ANNOUNCE] Xpra 2.4.2: important fixes

[Antoine Martin]

Hi,

This update fixes a number of important bugs, including server crashes
and client hangs.
Updating is strongly recommended but none of those bugs are new so there
is no urgency to update if you were not affected by those issues.


Release notes:
* fix server crash with application setting invalid X11 atoms
* fix missing windows with some mono applications (ignore invalid atoms)
* fix small X11 memory leak
* fix encoding of empty areas (hard to trigger)
* fix client hangs due to signal-watcher (now disabled with python2)
* fix virtual printer cleanup errors
* fix leaking xvfb processes when displayfd times out
* fix window size hints not being sanitized correctly
* fix cpu waste and automatic quality calculations
* fix statistics used by shadow servers
* fix error capturing screenshots on MS Windows
* fix logging error in modifier state change failure code path
* fix nvenc errors with odd image heights
* fix over aggressive screen update rectangle merging
* fix race condition causing the connection cleanup code to run twice
* fix ssh dialog button actions
* ensure Qt applications use the X11 backend so we can intercept them
* skip unnecessary video tests when mmap is enabled
* handle property change handlers errors more gracefully
* avoid recycling video contexts unnecessarily
* don't flush video encoders when doing a regular content refresh


The source:
https://xpra.org/src/
Downloads:
https://xpra.org/trac/wiki/Download

Cheers
Antoine