moved `_layout` to PROGMEM

where it should have been (and i thought it was) before ... oops :)

firmware/keyboard/ergodox/layout/common/definitions.h

@@ -99,12 +99,12 @@ typedef  void (*_key_t[2])(void);
  * - The first dimension of the matrix (left blank in the typedef since it
  *   varies between layouts) is "layers"
  */
-typedef  const _key_t PROGMEM _layout_t[][OPT__KB__ROWS][OPT__KB__COLUMNS];
+typedef  const _key_t _layout_t[][OPT__KB__ROWS][OPT__KB__COLUMNS];
 
 /**                                                variables/layout/description
  * The variable containing our layout matrix
  */
-_layout_t _layout;
+_layout_t PROGMEM _layout;
 
 /**                                            variables/sticky_key/description
  * A pointer to the release function of the last sticky key pressed

firmware/keyboard/ergodox/layout/common/exec_key.c.h

@@ -46,10 +46,11 @@ void kb__layout__exec_key(bool pressed, uint8_t row, uint8_t column) {
         else
             layer = layer_stack__peek(i-1);
 
-        function = _layout[ layer             ]
-                          [ row               ]
-                          [ column            ]
-                          [ (pressed) ? 0 : 1 ];
+        function = (void (*)(void))
+                   pgm_read_word( &( _layout[ layer             ]
+                                            [ row               ]
+                                            [ column            ]
+                                            [ (pressed) ? 0 : 1 ] ) );
 
         if (function == &KF(transp))
             function = NULL;

firmware/makefile

@@ -40,7 +40,7 @@ SRC         :=
 CFLAGS      :=
 LDFLAGS     :=
 GENDEPFLAGS :=
-# (initialize the variables so we can use `+=` below and in the included files)
+# (initialize variables, so we can use `+=` below and in the included files)
 
 CURDIRS := $(CURDIR) $(CURDIRS)
 # -------