[hlwm] split feature-request

[Flexo Rodriguez]

hello everyone!

i having a feature request after i took a look on bspwm. 

in bspwm you can not just split the tree to the right and bottom but split a
window to left and top. i think it would be a great improvement while handling
frames in hlwm. so if it is possible without that much struggling i will be even
more happy. (hlwm is the best wm despite some focus-bugs like in chromium)

thanks,

flexo