action_t store_or_get_action(bool pressed, keypos_t key);
/* return the topmost non-transparent layer currently associated with key */
-int8_t layer_switch_get_layer(keypos_t key);
+uint8_t layer_switch_get_layer(keypos_t key);
/* return action depending on current layer status */
action_t layer_switch_get_action(keypos_t key);