v4.2.2

• don't build ffmpeg codecs on i386 (crashy)
• prevent crashes caused by svg conversion done in a thread
• always stop the 'new-stream' notification process
• prevent subprocesses from becoming zombies
• clean server on 'stop' or 'exit'
• fix application geometry issues
• show correct default values with "xpra --help"
• source and source-start errors on CentOS 8
• stop responding to 'info' requests when shutting down
• network layer:
  • honour the packet-encoding and compressors options
  • rencode packet encoder is not thread safe!
  • packet errors with bencoder and None values
  • don't assume the packet encoders handle bytes and / or strings
• client issues:
  • backwards compatibility with v3 servers for ssh start
  • incorrect client exit code
  • icon theme errors should not be fatal (triggered on MacOS)
• subcommands:
  • 'start-gui' invalid options shown
  • 'sessions' and 'displays' subcommands do not need a display
  • fix hidden 'wmname' utility subcommand
  • many subcommands should send debug logging to stderr
• platform issues:
  • MacOS dock flickering with 'start-gui'
  • MacOS splash screen hiding password prompts
• menu loading:
  • try harder to find valid menu entries to use
  • skip entries that cannot be executed
  • don't block the main thread when loading menus
• xpra top:
  • handle unicode window titles correctly
  • fix screen corruption due to threading
  • fix latency always showing as zero
• packaging fixes:
  • Debian packages now correctly use /etc/default for systemd service configuration
  • MacOS updates for latest GTK3 builds
  • add missing C++ files for MS Windows builds
  • DEB missing dependency on gst-launch needed for silence detection
• audio:
  • pipeline errors with aac encoder
  • X11 warning when starting microphone forwarding from the command line
• minor / cosmetic fixes:
  • cropped icons shown in html5 client connect page
  • logging, error handling
  • remove unused pulseaudio directories
  • '1080p' resize-display string matching