Made Windows systray module a package
Added stub for system tray icon implementation
Added icon property to Win32SystemTrayIcon
Added window property to Win32SystemTrayIcon
Added method to add systray icon
Added method to delete systray icon
Added win32 mainloop method
Run the win32 mainloop in a separate thread
Implemented systray protocol for Windows
Updated release notes
Merge branch 'feature-systray-windows'
Release 0.10