https://github.com/luisvinicius167/gliojs
http://luisvinicius167.github.io/gliojs/
review - http://www.hongkiat.com/blog/detect-cursor-leaving-browser-gliojs/
origin - http://www.pipiscrew.com/2017/07/detect-when-a-mouse-leaves-the-window-with-glio-js/ detect-when-a-mouse-leaves-the-window-with-glio-js