Multi-Platform PyGetWindow fork including Linux and macOS v0.0.2-beta

Fixed bugs, eliminated some ugly hacks and added alwaysOnTop(), alwaysOnBottom(), lowerWindow(), raiseWindow() and sendBehind() methods.
Still struggling with sendBehind() in GNOME.

Multi-Platform PyGetWindow fork including Linux and macOS

Initial release of Multi-Platform PyGetWindow, adding experimental Linux and macOS support to the original Windows support