Merge upstream master

9 files changed, 950 insertions, 0 deletions

diff --git a/keyboards/ymdk/melody96/config.h b/keyboards/ymdk/melody96/config.h
new file mode 100644
index 0000000000..d7bebae052
--- /dev/null
+++ b/keyboards/ymdk/melody96/config.h
@@ -0,0 +1,56 @@
+#pragma once
+
+#include "config_common.h"
+
+/* key matrix size */
+#define MATRIX_ROWS 12
+#define MATRIX_COLS 9
+
+/* key matrix pins */
+#define MATRIX_ROW_PINS { B7, B3, B2, B1, B0, E6, F0, F1, F4, F5, F6, F7 }
+#define MATRIX_COL_PINS { D0, D1, D2, D3, D5, D4, D6, D7, B4 }
+
+/* COL2ROW or ROW2COL */
+#define DIODE_DIRECTION ROW2COL
+
+#define LED_NUM_LOCK_PIN C6
+#define LED_CAPS_LOCK_PIN C7
+#define LED_SCROLL_LOCK_PIN B5
+#define LED_PIN_ON_STATE 0
+
+/* number of backlight levels */
+#define BACKLIGHT_PIN B6
+#ifdef BACKLIGHT_PIN
+#define BACKLIGHT_LEVELS 5
+#endif
+
+/* Set location for BootMagic key*/
+#define BOOTMAGIC_LITE_ROW 5
+#define BOOTMAGIC_LITE_COLUMN 0
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCE 5
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+#define RGB_DI_PIN E2
+#ifdef RGB_DI_PIN
+#define RGBLIGHT_EFFECT_BREATHING
+#define RGBLIGHT_EFFECT_RAINBOW_MOOD
+#define RGBLIGHT_EFFECT_RAINBOW_SWIRL
+#define RGBLIGHT_EFFECT_SNAKE
+#define RGBLIGHT_EFFECT_KNIGHT
+#define RGBLIGHT_EFFECT_CHRISTMAS
+#define RGBLIGHT_EFFECT_STATIC_GRADIENT
+#define RGBLIGHT_EFFECT_RGB_TEST
+#define RGBLIGHT_EFFECT_ALTERNATING
+#define RGBLIGHT_EFFECT_TWINKLE
+#define RGBLED_NUM 18
+#define RGBLIGHT_HUE_STEP 8
+#define RGBLIGHT_SAT_STEP 8
+#define RGBLIGHT_VAL_STEP 8
+#endif
diff --git a/keyboards/ymdk/melody96/keymaps/crilith/keymap.c b/keyboards/ymdk/melody96/keymaps/crilith/keymap.c
new file mode 100644
index 0000000000..e5eff6ee9d
--- /dev/null
+++ b/keyboards/ymdk/melody96/keymaps/crilith/keymap.c
@@ -0,0 +1,38 @@
+#include QMK_KEYBOARD_H
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  DYNAMIC_MACRO_RANGE,
+};
+
+#include "dynamic_macro.h"
+
+#define KC_REC DM_REC1
+#define KC_DONE DM_RSTP
+#define KC_PLAY DM_PLY1
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+	LAYOUT(
+    KC_ESC,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_PSCR, KC_HOME, KC_END,  KC_PGUP, KC_PGDN, KC_DEL,
+    KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSLS, KC_BSPC, KC_NUM,  KC_PSLS, KC_PAST, KC_PMNS,
+    KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS,          KC_P7,   KC_P8,   KC_P9,   KC_PPLS,
+    KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,                    KC_P4,   KC_P5,   KC_P6,   KC_PPLS,
+    KC_LSFT, KC_NUBS, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,          KC_UP,   KC_P1,   KC_P2,   KC_P3,   KC_PENT,
+    KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                             TT(1),   KC_RALT, KC_RCTL, KC_LEFT, KC_DOWN, KC_RGHT, KC_P0,   KC_PDOT, KC_PENT),
+
+	LAYOUT(
+    QK_BOOT, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______,
+    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_CALC, _______, _______, _______,
+    _______, RGB_TOG, _______, RGB_MOD, RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD, RGB_VAI, RGB_VAD, _______, _______, _______, _______,          _______, _______, _______, KC_TAB,
+    BL_TOGG, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,                   _______, _______, _______, KC_TAB,
+    _______, _______, _______, _______, BL_DOWN, BL_TOGG, BL_UP,   _______, _______, _______, _______, _______, _______,          _______, _______, _______, _______, _______,
+    _______, _______, _______,                            KC_PLAY,                            _______, KC_REC,  KC_DONE, _______, _______, _______, _______, _______, _______),
+};
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    if (!process_record_dynamic_macro(keycode, record)) {
+        return false;
+    }
+	return true;
+}
diff --git a/keyboards/ymdk/melody96/keymaps/default/keymap.c b/keyboards/ymdk/melody96/keymaps/default/keymap.c
new file mode 100644
index 0000000000..cc5a7cc0e5
--- /dev/null
+++ b/keyboards/ymdk/melody96/keymaps/default/keymap.c
@@ -0,0 +1,20 @@
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT_all(
+        KC_ESC,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_PSCR, KC_HOME, KC_END,  KC_PGUP, KC_PGDN, KC_DEL,
+        KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSLS, KC_BSPC, KC_NUM,  KC_PSLS, KC_PAST, KC_PMNS,
+        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS,          KC_P7,   KC_P8,   KC_P9,   KC_PMNS,
+        KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,                    KC_P4,   KC_P5,   KC_P6,   KC_PPLS,
+        KC_LSFT, KC_NUBS, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,          KC_UP,   KC_P1,   KC_P2,   KC_P3,   KC_PENT,
+        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                             KC_RALT, MO(1),   MO(1),   KC_LEFT, KC_DOWN, KC_RGHT, KC_P0,   KC_PDOT, KC_PENT
+    ),
+    [1] = LAYOUT_all(
+        QK_BOOT,   _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+        _______, RGB_TOG, _______, RGB_MOD, RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD, RGB_VAI, RGB_VAD, _______, _______, _______, _______,          _______, _______, _______, _______,
+        BL_TOGG, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,                   _______, _______, _______, _______,
+        _______, _______, _______, _______, BL_DOWN, BL_TOGG, BL_UP,   _______, _______, _______, _______, _______, _______,          _______, _______, _______, _______, _______,
+        _______, _______, _______,                            _______,                            _______, _______, _______, _______, _______, _______, _______, _______, _______
+    )
+};
diff --git a/keyboards/ymdk/melody96/keymaps/default_96_with60_split_num0/keymap.c b/keyboards/ymdk/melody96/keymaps/default_96_with60_split_num0/keymap.c
new file mode 100644
index 0000000000..6e4af827d6
--- /dev/null
+++ b/keyboards/ymdk/melody96/keymaps/default_96_with60_split_num0/keymap.c
@@ -0,0 +1,36 @@
+#include QMK_KEYBOARD_H
+
+enum custom_keycodes {
+    KC_P00 = SAFE_RANGE
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT_96_with60_split_num0(
+        KC_ESC,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_PSCR, KC_HOME, KC_END,  KC_PGUP, KC_PGDN, KC_DEL,
+        KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,           KC_BSPC, KC_NUM,  KC_PSLS, KC_PAST, KC_PMNS,
+        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC,          KC_BSLS, KC_P7,   KC_P8,   KC_P9,   KC_PPLS,
+        KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,                   KC_ENT,  KC_P4,   KC_P5,   KC_P6,
+        KC_LSFT,          KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH,                   KC_RSFT, KC_P1,   KC_P2,   KC_P3,   KC_PENT,
+        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                             KC_RALT, MO(1),            KC_APP,  KC_RCTL, KC_P0,   KC_P00,  KC_PDOT
+    ),
+    [1] = LAYOUT_96_with60_split_num0(
+        QK_BOOT,   _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, _______, _______, _______, _______,
+        _______, RGB_TOG, _______, RGB_MOD, RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD, RGB_VAI, RGB_VAD, _______, _______, _______,          _______, _______, _______, _______, _______,
+        BL_TOGG, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,                   _______, _______, _______, _______,
+        _______,          _______, _______, BL_DOWN, BL_TOGG, BL_UP,   _______, _______, _______, _______, _______,                   _______, _______, _______, _______, _______,
+        _______, _______, _______,                            _______,                            _______, _______,          _______, _______, _______, _______, _______
+    )
+};
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+        case KC_P00:
+            if (record->event.pressed) {
+                tap_code(KC_P0);
+                tap_code(KC_P0);
+            }
+            return false;
+    }
+    return true;
+}
diff --git a/keyboards/ymdk/melody96/keymaps/dvz/config.h b/keyboards/ymdk/melody96/keymaps/dvz/config.h
new file mode 100644
index 0000000000..9c834bdce1
--- /dev/null
+++ b/keyboards/ymdk/melody96/keymaps/dvz/config.h
@@ -0,0 +1,37 @@
+ /* Copyright 2021 Milan Düwel
+  *
+  * This program is free software: you can redistribute it and/or modify
+  * it under the terms of the GNU General Public License as published by
+  * the Free Software Foundation, either version 2 of the License, or
+  * (at your option) any later version.
+  *
+  * This program is distributed in the hope that it will be useful,
+  * but WITHOUT ANY WARRANTY; without even the implied warranty of
+  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  * GNU General Public License for more details.
+  *
+  * You should have received a copy of the GNU General Public License
+  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  */
+
+#pragma once
+
+#define COMBO_COUNT 4
+#define COMBO_TERM 100
+
+//#define UNICODE_SELECTED_MODES UNICODE_MODE_WINCOMPOSE
+
+#define RGBLIGHT_LAYERS
+#define RGBLIGHT_LAYER_BLINK
+
+#define RGBLIGHT_EFFECT_ALTERNATING
+#define RGBLIGHT_EFFECT_BREATHING
+#define RGBLIGHT_EFFECT_CHRISTMAS
+#define RGBLIGHT_EFFECT_KNIGHT
+#define RGBLIGHT_EFFECT_SNAKE
+#define RGBLIGHT_EFFECT_TWINKLE
+
+#undef RGBLIGHT_EFFECT_RAINBOW_MOOD
+#undef RGBLIGHT_EFFECT_RAINBOW_SWIRL
+#undef RGBLIGHT_EFFECT_STATIC_GRADIENT
+#undef RGBLIGHT_EFFECT_RGB_TEST
diff --git a/keyboards/ymdk/melody96/keymaps/dvz/keymap.c b/keyboards/ymdk/melody96/keymaps/dvz/keymap.c
new file mode 100644
index 0000000000..b0f01eead6
--- /dev/null
+++ b/keyboards/ymdk/melody96/keymaps/dvz/keymap.c
@@ -0,0 +1,161 @@
+ /* Copyright 2021 Milan Düwel
+  *
+  * This program is free software: you can redistribute it and/or modify
+  * it under the terms of the GNU General Public License as published by
+  * the Free Software Foundation, either version 2 of the License, or
+  * (at your option) any later version.
+  *
+  * This program is distributed in the hope that it will be useful,
+  * but WITHOUT ANY WARRANTY; without even the implied warranty of
+  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  * GNU General Public License for more details.
+  *
+  * You should have received a copy of the GNU General Public License
+  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  */
+
+#include QMK_KEYBOARD_H
+
+ /* This keymap is designed for use with a German keyboard layout.
+  * It is essentially the same as the default via keymap but adds combo functionality to type umlauts as well as lighting layers for various actions.
+  * Toggling the combo feature also disables KC_LGUI so both can be turned off for gaming. If you want to get rid of it without reflashing new firmware, use KC_RGUI instead.
+  * Layers 2 and 3 are currently unused but are configurable within via.
+  */
+
+enum combos {
+  UML_AE,
+  UML_OE,
+  UML_UE,
+  UML_SZ
+};
+
+const uint16_t PROGMEM ae_combo[] = {KC_A, KC_E, COMBO_END};
+const uint16_t PROGMEM oe_combo[] = {KC_O, KC_E, COMBO_END};
+const uint16_t PROGMEM ue_combo[] = {KC_U, KC_E, COMBO_END};
+const uint16_t PROGMEM sz_combo[] = {KC_S, KC_Y, COMBO_END};
+
+combo_t key_combos[COMBO_COUNT] = {
+  [UML_AE] = COMBO(ae_combo, KC_QUOT),
+  [UML_OE] = COMBO(oe_combo, KC_SCLN),
+  [UML_UE] = COMBO(ue_combo, KC_LBRC),
+  [UML_SZ] = COMBO(sz_combo, KC_MINS)
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+	[0] = LAYOUT(
+    KC_ESC,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_PSCR, KC_HOME, KC_END,  KC_PGUP, KC_PGDN, KC_DEL,
+    KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSLS, KC_BSPC, KC_NUM,  KC_PSLS, KC_PAST, KC_PMNS,
+    KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS,          KC_P7,   KC_P8,   KC_P9,   KC_PMNS,
+    KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,                    KC_P4,   KC_P5,   KC_P6,   KC_PPLS,
+    KC_LSFT, KC_NUBS, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,          KC_UP,   KC_P1,   KC_P2,   KC_P3,   KC_PENT,
+    KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                             KC_RALT, MO(1),   MO(1),   KC_LEFT, KC_DOWN, KC_RGHT, KC_P0,   KC_PDOT, KC_PENT),
+
+	[1] = LAYOUT(
+    QK_BOOT, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_VOLD,
+    KC_TRNS, RGB_TOG, KC_TRNS, RGB_MOD, RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD, RGB_VAI, RGB_VAD, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS, KC_VOLD,
+    BL_TOGG, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   KC_TRNS, KC_TRNS, KC_TRNS, KC_VOLU,
+    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, CM_TOGG, BL_TOGG, BL_UP,   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_PGUP, KC_TRNS, KC_TRNS, KC_TRNS, KC_MUTE,
+    KC_TRNS, KC_TRNS, KC_TRNS,                            KC_TRNS,                            KC_TRNS, KC_TRNS, KC_TRNS, KC_HOME, KC_PGDN, KC_END,  KC_TRNS, KC_TRNS, KC_MUTE),
+
+	[2] = LAYOUT(
+	KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+	KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+	KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+	KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+	KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+	KC_TRNS, KC_TRNS, KC_TRNS,                            KC_TRNS,                            KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+
+	[3] = LAYOUT(
+	KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+	KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+	KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+	KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+	KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+	KC_TRNS, KC_TRNS, KC_TRNS,                            KC_TRNS,                            KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+};
+
+/*  The lighting layers feature a caps indicator as well as layer blinks for mute and the function layer (blink only to allow unhindered adjustment of the RGB backlight settings).
+    Sadly these colours can not be customized within VIA.
+*/
+
+const rgblight_segment_t PROGMEM my_capslock_layer[] = RGBLIGHT_LAYER_SEGMENTS(
+    {0, 1, HSV_RED},
+    {15, 17, HSV_RED}
+);
+
+const rgblight_segment_t PROGMEM my_function_layer[] = RGBLIGHT_LAYER_SEGMENTS(
+    {10, 12, HSV_YELLOW}
+);
+
+const rgblight_segment_t PROGMEM my_f2_layer[] = RGBLIGHT_LAYER_SEGMENTS(
+    {0, 17, HSV_CYAN}
+);
+
+const rgblight_segment_t PROGMEM my_f3_layer[] = RGBLIGHT_LAYER_SEGMENTS(
+    {0, 17, HSV_PURPLE}
+);
+
+const rgblight_segment_t PROGMEM my_flash_layer[] = RGBLIGHT_LAYER_SEGMENTS(
+    {0, 17, HSV_RED}
+);
+
+// Now define the array of layers. Later layers take precedence
+const rgblight_segment_t* const PROGMEM my_rgb_layers[] = RGBLIGHT_LAYERS_LIST(
+    my_capslock_layer,
+    my_function_layer,    // Overrides caps lock layer
+    my_f2_layer,
+    my_f3_layer,
+    my_flash_layer
+);
+
+void keyboard_post_init_user(void) {
+    // Enable the LED layers
+    rgblight_layers = my_rgb_layers;
+};
+
+bool led_update_user(led_t led_state) {
+    rgblight_set_layer_state(0, led_state.caps_lock);
+    return true;
+};
+
+layer_state_t layer_state_set_user(layer_state_t state) {
+    //rgblight_set_layer_state(1, layer_state_cmp(state, 1));
+    rgblight_set_layer_state(2, layer_state_cmp(state, 2));
+    rgblight_set_layer_state(3, layer_state_cmp(state, 3));
+    return state;
+};
+
+// Note we user post_process_record_user because we want the state
+// after the flag has been flipped...
+void post_process_record_user(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+        case KC_CAPS:
+        case KC_MUTE:
+        case QK_COMBO_TOGGLE:
+            if (record->event.pressed) {
+                rgblight_blink_layer(4, 250);
+            }
+            break;
+        case MO(1):
+            if (record->event.pressed) {
+                rgblight_blink_layer(1, 250);
+            }
+            break;
+    }
+};
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  switch (keycode) {
+        case KC_LGUI:   //use combo toggle to disable the win key while gaming
+            if (record->event.pressed) {
+                if (is_combo_enabled()==false) {
+                    return false;
+                }
+            }
+            return true; // Let QMK send the enter press/release events
+        default:
+            return true; // Process all other keycodes normally
+  }
+};
diff --git a/keyboards/ymdk/melody96/keymaps/konstantin/keymap.c b/keyboards/ymdk/melody96/keymaps/konstantin/keymap.c
new file mode 100644
index 0000000000..5dff7a249a
--- /dev/null
+++ b/keyboards/ymdk/melody96/keymaps/konstantin/keymap.c
@@ -0,0 +1,77 @@
+#include QMK_KEYBOARD_H
+#include "konstantin.h"
+
+static const HSV *colors[] = { &godspeed_blue, &godspeed_yellow };
+static const size_t cnum = ARRAY_SIZE(colors);
+static size_t cidx = 0;
+
+enum keycodes_keymap {
+    RGB_SET = RANGE_KEYMAP,
+};
+
+void eeconfig_init_keymap(void) {
+    rgblight_sethsv(colors[cidx]->h, colors[cidx]->s, colors[cidx]->v);
+}
+
+bool process_record_keymap(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+    case RGB_SET:
+        if (record->event.pressed) {
+            cidx = (cidx + 1) % cnum;
+            rgblight_sethsv(colors[cidx]->h, colors[cidx]->s, colors[cidx]->v);
+        }
+        break;
+    }
+
+    return true;
+}
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* Base layer
+     * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┐
+     * │Esc│F1 │F2 │F3 │F4 │F5 │F6 │F7 │F8 │F9 │F10│F11│F12│PSc│Ins│Hom│End│PgU│PgD│
+     * ├───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┤
+     * │ ` │ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ 0 │ - │ = │ \ │Del│NLk│P/ │P* │P- │
+     * ├───┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴───┼───┼───┼───┼───┤
+     * │ Tab │ Q │ W │ E │ R │ T │ Y │ U │ I │ O │ P │ [ │ ] │Bspc │P7 │P8 │P9 │   │
+     * ├─────┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴─────┼───┼───┼───┤P+ │
+     * │FnCaps│ A │ S │ D │ F │ G │ H │ J │ K │ L │ ; │ ' │ Enter  │P4 │P5 │P6 │   │
+     * ├────┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴────┬───┼───┼───┼───┼───┤
+     * │LSft│RAG│ Z │ X │ C │ V │ B │ N │ M │ , │ . │ / │RSfRCt│ ↑ │P1 │P2 │P3 │   │
+     * ├────┼───┴┬──┴─┬─┴───┴───┴───┴───┴───┴──┬┴───┴┬──┴──┬───┼───┼───┼───┼───┤PEn│
+     * │LCtl│LGui│LAlt│         Space          │RAlGu│FnFLk│ ← │ ↓ │ → │P0 │P. │   │
+     * └────┴────┴────┴────────────────────────┴─────┴─────┴───┴───┴───┴───┴───┴───┘
+     */
+    [L_BASE] = LAYOUT(
+        KC_ESC,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_PSCR, KC_INS,  KC_HOME, KC_END,  KC_PGUP, KC_PGDN,
+        KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSLS, KC_DEL,  KC_NUM,  KC_PSLS, KC_PAST, KC_PMNS,
+        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSPC,          KC_P7,   KC_P8,   KC_P9,   XXXXXXX,
+        FN_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,                    KC_P4,   KC_P5,   KC_P6,   KC_PPLS,
+        KC_LSFT, RAL_RGU, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, RSF_RCT,          KC_UP,   KC_P1,   KC_P2,   KC_P3,   XXXXXXX,
+        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                             RAL_RGU, XXXXXXX, FN_FNLK, KC_LEFT, KC_DOWN, KC_RGHT, KC_P0,   KC_PDOT, KC_PENT
+    ),
+
+    /* Fn layer
+     * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┐
+     * │   │   │   │   │   │   │   │   │   │   │   │   │   │Sys│SLk│Pau│Brk│Top│Btm│
+     * ├───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┤
+     * │   │F1 │F2 │F3 │F4 │F5 │F6 │F7 │F8 │F9 │F10│F11│F12│   │   │RTg│ ÷ │ × │ − │
+     * ├───┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴───┼───┼───┼───┼───┤
+     * │ M4  │M2 │M↑ │M1 │M3 │M5 │   │UCM│   │Stp│Ply│Prv│Nxt│Clear│RH+│RS+│RV+│   │
+     * ├─────┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴─────┼───┼───┼───┤RSt│
+     * │      │M← │M↓ │M→ │MW↑│   │   │   │   │   │   │   │        │RH-│RS-│RV-│   │
+     * ├────┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴────┬───┼───┼───┼───┼───┤
+     * │    │   │MA0│MA2│MW←│MW→│   │   │App│Vo-│Vo+│Mut│      │PgU│RMR│RMS│RMB│   │
+     * ├────┼───┴┬──┴─┬─┴───┴───┴───┴───┴───┴──┬┴──┬┴──┬┴──┬───┼───┼───┼───┼───┤RMP│
+     * │    │DtPR│DtNA│          MW↓           │   │   │   │Hom│PgD│End│RM-│RM+│   │
+     * └────┴────┴────┴────────────────────────┴───┴───┴───┴───┴───┴───┴───┴───┴───┘
+     */
+    [L_FN] = LAYOUT(
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, SYSRQ,   KC_SCRL, KC_PAUS, BREAK,   TOP,     BOTTOM,
+        _______, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  _______, _______, RGB_TOG, DIVIDE,  TIMES,   MINUS,
+        KC_BTN4, KC_BTN2, KC_MS_U, KC_BTN1, KC_BTN3, KC_BTN5, _______, UC_NEXT, _______, KC_MSTP, KC_MPLY, KC_MPRV, KC_MNXT, CLEAR,            RGB_HUI, RGB_SAI, RGB_VAI, XXXXXXX,
+        _______, KC_MS_L, KC_MS_D, KC_MS_R, KC_WH_U, _______, _______, _______, _______, _______, _______, _______, _______,                   RGB_HUD, RGB_SAD, RGB_VAD, RGB_SET,
+        _______, _______, KC_ACL0, KC_ACL2, KC_WH_L, KC_WH_R, _______, _______, KC_APP,  KC_VOLD, KC_VOLU, KC_MUTE, _______,          KC_PGUP, RGB_M_R, RGB_M_SN,RGB_M_B, XXXXXXX,
+        _______, DST_P_R, DST_N_A,                            KC_WH_D,                            _______, XXXXXXX, _______, KC_HOME, KC_PGDN, KC_END,  RGB_RMOD,RGB_MOD, RGB_M_P
+    ),
+};
diff --git a/keyboards/ymdk/melody96/keymaps/via/keymap.c b/keyboards/ymdk/melody96/keymaps/via/keymap.c
new file mode 100644
index 0000000000..897d86acb7
--- /dev/null
+++ b/keyboards/ymdk/melody96/keymaps/via/keymap.c
@@ -0,0 +1,36 @@
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT_all(
+        KC_ESC,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_PSCR, KC_HOME, KC_END,  KC_PGUP, KC_PGDN, KC_DEL,
+        KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSLS, KC_BSPC, KC_NUM,  KC_PSLS, KC_PAST, KC_PMNS,
+        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS,          KC_P7,   KC_P8,   KC_P9,   KC_PMNS,
+        KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,                    KC_P4,   KC_P5,   KC_P6,   KC_PPLS,
+        KC_LSFT, KC_NUBS, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,          KC_UP,   KC_P1,   KC_P2,   KC_P3,   KC_PENT,
+        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                             KC_RALT, MO(1),   MO(1),   KC_LEFT, KC_DOWN, KC_RGHT, KC_P0,   KC_PDOT, KC_PENT
+    ),
+    [1] = LAYOUT_all(
+        QK_BOOT,   _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+        _______, RGB_TOG, _______, RGB_MOD, RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD, RGB_VAI, RGB_VAD, _______, _______, _______, _______,          _______, _______, _______, _______,
+        BL_TOGG, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,                   _______, _______, _______, _______,
+        _______, _______, _______, _______, BL_DOWN, BL_TOGG, BL_UP,   _______, _______, _______, _______, _______, _______,          _______, _______, _______, _______, _______,
+        _______, _______, _______,                            _______,                            _______, _______, _______, _______, _______, _______, _______, _______, _______
+    ),
+    [2] = LAYOUT_all(
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,                   _______, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, _______, _______, _______, _______,
+        _______, _______, _______,                            _______,                            _______, _______, _______, _______, _______, _______, _______, _______, _______
+    ),
+    [3] = LAYOUT_all(
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,                   _______, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, _______, _______, _______, _______,
+        _______, _______, _______,                            _______,                            _______, _______, _______, _______, _______, _______, _______, _______, _______
+    )
+};
diff --git a/keyboards/ymdk/melody96/keymaps/zunger/keymap.c b/keyboards/ymdk/melody96/keymaps/zunger/keymap.c
new file mode 100644
index 0000000000..d65f10dcec
--- /dev/null
+++ b/keyboards/ymdk/melody96/keymaps/zunger/keymap.c
@@ -0,0 +1,489 @@
+/* Copyright 2019 Yonatan Zunger
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+#include <assert.h>
+
+// This keymap is designed to make it easy to type in a wide variety of languages, as well as
+// generate mathematical symbols (à la Space Cadet).
+//
+// LAYER MAGIC (aka, typing in many alphabets)
+//   This keyboard has three "base" layers: QWERTY, GREEK, and CADET. The GREEK and CADET layers
+// are actually full of Unicode points, and so which point they generate depends on things like
+// whether the shift key is down. To handle this, each of those layers is actually *two* layers, one
+// with and one without shift. In our main loop, we manage modifier state detection, as well as
+// layer switch detection, and pick the right layer on the fly.
+//   Layers are selected with a combination of three keys. The "Greek" and "Cadet" keys act like
+// modifiers: When held down, they transiently select the indicated base layer. The "Layer Lock" key
+// locks the value of the base layer at whatever is currently held; so e.g., if you hold Greek +
+// Layer Lock, you'll stay in Greek mode until you hit Layer Lock again without any of the mods
+// held.
+//   TODO: This system of layer selection is nice for math, but it's not very nice for actually
+// typing in multiple languages. It seems like a better plan will be to reserve one key for each
+// base layer -- maybe fn + F(n) -- which can either be held as a modifier or tapped to switch
+// layers. That will open up adding some more languages, like Yiddish, but to do this effectively
+// we'll need to find a good UI with which to show the currently selected layer. Need to check what
+// the melody96 has in the way of outputs (LEDs, sound, etc).
+//
+// ACCENT MAGIC (aka, typing conveniently in Romance languages)
+//   We want to support easy typing of diacritical marks. We can't rely on the host OS for this,
+// because (e.g.) on MacOS, to make any of the other stuff work, we need to be using the Unicode
+// input method at the OS level, which breaks all the normal accent stuff on that end. So we do it
+// ourselves. Accents can actually be invoked in two different ways: one fast and very compatible,
+// one very versatile but with occasional compatibility problems.
+//
+//   THE MAIN WAY: You can hit one of the "accent request" key patterns immediately *before* typing
+//   a letter to be accented. It will emit the corresponding accented Unicode. For example, you can
+//   hit fn-e to request an acute accent, followed by i, and it will output í, U+00ED LATIN SMALL
+//   LETTER I WITH ACUTE. These "combined characters" are in Unicode normal form C (NFKC), which is
+//   important because many European websites and apps, in particular, tend to behave very badly
+//   (misunderstanding and/or crashing) when presented with characters in other forms! The catch is
+//   that this only works for the various combinations of letters and accents found in the Latin-1
+//   supplement block of Unicode -- basically, things you need for Western European languages.
+//
+//   (NB: If you make an accent request followed by a letter which can't take the corresponding
+//   accent, it will output the uncombined form of the accent followed by whatever you typed; so
+//   e.g., if you hit fn-e followed by f, it will output ´f, U+00B4 ACUTE ACCENT followed by an
+//   ordinary f. This is very similar to the default behavior of MacOS.)
+//
+//   THE FLEXIBLE WAY: If you hit the accent request with a shift -- e.g., fn-shift-e -- it will
+//   instead immediately output the corresponding *combining* Unicode accent mark, which will modify
+//   the *previous* character you typed. For example, if you type i followed by fn-shift-e, it will
+//   generate í. But don't be fooled by visual similarity: unlike the previous example, this one is
+//   an ordinary i followed by U+0301 COMBINING ACUTE ACCENT. It's actually *two symbols*, and this
+//   is Unicode normal form D (NFKD). Unlike NFKC, there are NFKD representations of far more
+//   combinations of letters and accents, and it's easy to add more of these if you need. (The NFKC
+//   representation of such combinations is identical to their NFKD representation)
+//
+//   Programs that try to compare Unicode strings *should* first normalize them by converting them
+//   all into one normal form or another, and there are functions in every programming language to
+//   do this -- e.g., JavaScript's string.normalize() -- but lots of programmers fail to understand
+//   this, and so write code that massively freaks out when it encounters the wrong form.
+//
+// The current accent request codes are modeled on the ones in MacOS.
+//
+//    fn+`    Grave accent (`)
+//    fn+e    Acute accent (´)
+//    fn+i    Circumflex (^)
+//    fn+u    Diaresis / umlaut / trema (¨)
+//    fn+c    Cedilla (¸)
+//    fn+n    Tilde (˜)
+//
+// Together, these functions make for a nice "polyglot" keyboard: one that can easily type in a wide
+// variety of languages, which is very useful for people who, well, need to type in a bunch of
+// languages.
+//
+// The major TODOs are:
+//   - Update the layer selection logic (and add visible layer cues);
+//   - Factor the code below so that the data layers are more clearly separated from the code logic,
+//     so that other users of this keymap can easily add whichever alphabets they need without
+//     having to deeply understand the implementation.
+
+
+enum custom_keycodes {
+  // We provide special layer management keys:
+  //    GREEK triggers the Greek (aka "Front") layer, or the SHIFTGREEK layer when shift is held.
+  //          (Because we use Unicode, we need to implement shift-handling at the firmware level,
+  //          rather than the OS level like we do in the QWERTY layer)
+  //    CADET or GREEK+ALT triggers the Cadet (aka "Top") layer, or the SHIFTCADET layer when
+  //          shift is held.
+  //    LAYER_LOCK locks the "base" layer (i.e., QWERTY, GREEK, or CADET) to the value which is
+  //          pressed at the moment that it is being released. When a layer lock is set, the
+  //          analogous layer modifier key is reversed; e.g., if you lock