v5.1

• missing wheel events in non-seamless modes
• workaround for older browsers without hasOwn (ie: Safari)
• workaround debilitating Safari clipboard implementation
• broken legacy clipboard
• windows movement compatibility with Xpra 3.1.x
• don't allow modal windows to be minimized
• build fixes for RHEL and clones
• setuptools and Debian repo build script fixes
• only send 'sound-stop' if audio is enabled
• rencode draw compatibility fix
• avoid errors when windows don't have a title
• provide a more useful screen name to the server
• truncate large clipboard buffers in debug output
• log the actual packet data with network errors
• decode worker always supports rgb
• fix brotli decompression
• minor codestyle tweaks
• clarify installation instructions