BREAKING: Add identifier to conditional_layer (#53)

This fixes an issues where multiple tri-state conditions would overwrite
one another

docs/core_helpers.md

@@ -154,11 +154,12 @@ ZMK_COMBO(paste, &kp LC(V), LB1 LB2)
 
 ### Synopsis
 
-`ZMK_CONDITIONAL_LAYER(if_layers, then_layers)`
+`ZMK_CONDITIONAL_LAYER(name, if_layers, then_layer)`
 
 Set up a `tri-layer` condition, which activates `then_layer` if all layers in `if_layers` are
 active.
 
+- `name`: a unique identifier string
 - `if_layers`: a list of layers which trigger the `then_layer` if simultaneously active
 - `then_layer`: the layer which is activated when the if-condition is met. Due to ZMK's layering
   model, it should generally have a higher number than the `if_layers`
@@ -168,7 +169,7 @@ active.
 This triggers "layer 3" if layers "1" and "2" are simultaneously active.
 
 ```C++
-ZMK_CONDITIONAL_LAYER(1 2, 3)
+ZMK_CONDITIONAL_LAYER(its_magic, 1 2, 3)
 ```
 
 Mind that ZMK's layer numbering starts at 0. One can use layer definitions, as demonstrated in this

docs/migration-to-v2.md

@@ -24,4 +24,6 @@
    ```
 
 4. Change prefix of Danish unicode characters from `dk_` to the ISO language code `da_`
-5. (optional) replace `ZMK_BEHAVIOR` with explicit behavior helpers
+5. Add identifier string to `ZMK_CONDITIONAL_LAYER`
+   ([new syntax](core_helpers.md#zmk_conditional_layer))
+6. (optional) replace `ZMK_BEHAVIOR` with explicit behavior helpers

include/zmk-helpers/helper.h

@@ -113,11 +113,11 @@
 
 /* ZMK_CONDITIONAL_LAYER */
 
-#define ZMK_CONDITIONAL_LAYER(if_layers, then_layer) \
+#define ZMK_CONDITIONAL_LAYER(name, if_layers, then_layer) \
     / { \
         conditional_layers { \
             compatible = "zmk,conditional-layers"; \
-            tri_layer { \
+            tri_layer_ ## name { \
                 if-layers = <if_layers>; \
                 then-layer = <then_layer>; \
             }; \