A Window Manager!

To install deps on ubuntu:

sudo apt-get install libxcb-ewmh-dev libxcb-util0-dev libxcb-xkb-dev \
     libxcb-keysyms1-dev libmozjs-24-dev libxkbcommon-dev \
     libxcb-icccm4-dev libxkbcommon-x11-dev g++ cmake

You also need V8 >= 3.27