This very simple module is used to drop illegal keycodes (anything above 0xFF), which are usually used as indicators for certain behaviors (e.g., adaptive key, auto layer, output listener, etc.).

Please note that user module listeners are always processed before ZMK core ones, so this module can't be used, for example, to reset sticky keys (because the key will be dropped before it reaches ZMK sticky keys listener).

Add the following entries to remotes and projects in config/west.yml.

manifest:
  remotes:
    - name: zmkfirmware
      url-base: https://github.com/zmkfirmware
    - name: ssbb
      url-base: https://github.com/ssbb
  projects:
    - name: zmk
      remote: zmkfirmware
      import: app/west.yml
    - name: zmk-deadkey-slayer
      remote: ssbb
      revision: v1
  self:
    path: config