[winswitch] [ANNOUNCE] Xpra 2.2.1: minor fixes

[Antoine Martin]

Hi,

This update fixes some minor issues, mostly regressions in the 2.2
branch related to the keyboard, system tray and webp encoding.

Release notes:
* fix MacOS keyboard detection crash
* fix system proxy not starting due to missing SSL certificate (DEB)
* fix typo in per-user config file location example
* fix error in fakeXinerama error handler
* fix non-systemd system service files
* fix automatic bandwidth limit underestimated
* fix application crash caused by KDE systray API
* fix system tray forwarding, size miscalculation on MS Windows
* fix "delay-tray" command line option
* fix system tray command line test scripts
* fix key mapping regression with X11 clients and non-us layouts
* fix auto-refresh handling error
* fix webp encoding with OpenGL rendering disabled
* don't enable webp on platforms with outdated libraries
* handle rfb-upgrade parsing failures more gracefully
* check for uinput permissions early (avoid using uinput configuration
unnecessarily)
* support older versions of python-lz4 (as used on Ubuntu and Debian)
* add missing webp RPM dependencies

Source:
https://xpra.org/trac/wiki/Source
Downloads:
https://xpra.org/trac/wiki/Download

Cheers
Antoine