A few different behaviour modules for ZMK to do silly things

Simply add the desired branches to your zmk-config repo's west.yml file like so:

- name: keysmash
    url: https://github.com/ReFil/refil-zmk-behaviour-modules
    revision: keysmash
- name: sarcasm
    url: https://github.com/ReFil/refil-zmk-behaviour-modules
    revision: sarcasm

Then include the appropriate behaviour header files in your .keymap file

#include <behaviors/keysmash.dtsi>
#include <behaviors/sarcasm.dtsi>

Then use the behaviours in the keymap

&keysmash
&sarcasm

Some behaviours may need additional configuration. This is usually documented in the dts/bindings/behaviors/zmk,behavior-<behavior>.yaml file