On Ubuntu 20.04, I did ``` sudo apt-get install cargo libxcb1-dev cargo install kmon ``` but that resulted in: ``` = note: /usr/bin/ld: cannot find -lxcb-render /usr/bin/ld: cannot find -lxcb-shape /usr/bin/ld: cannot find -lxcb-xfixes collect2: error: ld returned 1 exit status ``` After ``` sudo apt-get install libxcb-render0-dev libxcb-shape0-dev libxcb-xfixes0-dev ``` things went OK: a fresh binary `/home/sander/.cargo/bin/kmon` So those libraries are needed too, and are not installed by installing libxcb1-dev ? If so, shall I sent a PR for the README.md?