A small tidy up (#2490)

* Add extra RGUI key to make keyboard more MAC friendly

* Remove enumerators for no longer used layers in layout Skewwhiffy for XD75

* Make layer numbers even better

keyboards/xd75/keymaps/skewwhiffy/keymap.c

@@ -22,13 +22,11 @@
 
 // Layer shorthand
 #define _CM 0 // Colemak
-#define _QW 1 // Qwerty
+#define _NB 1 // Numbers
-#define _DV 2 // Dvorak
+#define _FN 2 // Function
-#define _NB 3 // Numbers
+#define _SYL 3 // Symbols left
-#define _FN 4 // Function
+#define _SYR 4 // Symbols right
-#define _SYL 5 // Symbols left
+#define _NAV 5 // Navigation
-#define _SYR 6 // Symbols right
-#define _NAV 7 // Navigation
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
@@ -42,7 +40,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |--------+--------------+--------------+---------------+--------------+--------------+--------+--------+--------+----------------+--------+------------------+----------------+------------------------|
  * |        | sft or Z     | nb or X      | sym or C      | V            | nav or B     |        |        |        | nav or K       | M      | sym or ,         | nb or .        | sft or /      |        |
  * |--------+--------------+--------------+---------------+--------------+--------------+--------+--------+--------+----------------+--------+------------------+----------------+------------------------|
- * | LSHIFT | LCTRL        |   LALT       | LGUI          |              | SPACE        | LCTRL  | DEL    | LALT   | BACKSP         |        | RGUI             | RALT           | RCTRL         | RSHIFT |
+ * | LSHIFT | LCTRL        |   LALT       | LGUI          | CTRL '       | SPACE        | LCTRL  | DEL    | LALT   | BACKSP         | RGUI   | RGUI             | RALT           | RCTRL         | RSHIFT |
  * '------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------'
  */
  [_CM] = {
@@ -50,7 +48,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   { _______, KC_Q,          KC_W,          KC_F,           KC_P,          KC_G,           _______, _______, _______, KC_J,           KC_L,    KC_U,              KC_Y,             KC_SCLN,        _______ },
   { _______, KC_A,          KC_R,          KC_S,           KC_T,          KC_D,           _______, _______, _______, KC_H,           KC_N,    KC_E,              KC_I,             KC_O,           KC_ENT  },
   { _______, SFT_T(KC_Z),   LT(_NB, KC_X), LT(_SYL, KC_C), KC_V,          LT(_NAV, KC_B), _______, _______, _______, LT(_NAV, KC_K), KC_M,    LT(_SYR, KC_COMM), LT(_FN, KC_DOT),  SFT_T(KC_SLSH), _______ },
-  { KC_LSFT, KC_LCTL,       KC_LALT,       KC_LGUI,        LCTL(KC_QUOT), KC_SPC,         KC_LCTL, KC_DEL , KC_LALT, KC_BSPC,        _______, KC_RGUI,           KC_RALT,          KC_RCTL,        KC_RSFT },
+  { KC_LSFT, KC_LCTL,       KC_LALT,       KC_LGUI,        LCTL(KC_QUOT), KC_SPC,         KC_LCTL, KC_DEL , KC_LALT, KC_BSPC,        KC_RGUI, KC_RGUI,           KC_RALT,          KC_RCTL,        KC_RSFT },
  },
 
 /* Numbers _NB / Functions _FN