[Keymap] Various improvements to my Lily58 keymap (#7045)

* Fix off-by-one error in Lily58 function keys

* Swap number and symbol layers

* Move grave/tilde to the left of brackets/braces

* Add KLE links

* Move function keys to Raise layer

* Move symbols nearer to home row

* Add readme for Lily58 layout

2 files changed, 70 insertions, 7 deletions

diff --git a/keyboards/lily58/keymaps/bcat/keymap.c b/keyboards/lily58/keymaps/bcat/keymap.c
index 562aad3fd0..110ba0d4ba 100644
--- a/keyboards/lily58/keymaps/bcat/keymap.c
+++ b/keyboards/lily58/keymaps/bcat/keymap.c
@@ -13,30 +13,34 @@ enum layer {
 #define KY_CESC LCTL_T(KC_ESC)
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* Default layer: http://www.keyboard-layout-editor.com/#/gists/e0eb3af65961e9fd612dcff3ddd88e4f */
     [LAYER_DEFAULT] = LAYOUT(
-        KC_EQL,   KC_1,     KC_2,     KC_3,     KC_4,     KC_5,                         KC_6,     KC_7,     KC_8,     KC_9,     KC_0,     KC_MINS,
+        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_TAB,   KC_Q,     KC_W,     KC_E,     KC_R,     KC_T,                         KC_Y,     KC_U,     KC_I,     KC_O,     KC_P,     KC_BSPC,
         KY_CESC,  KC_A,     KC_S,     KC_D,     KC_F,     KC_G,                         KC_H,     KC_J,     KC_K,     KC_L,     KC_SCLN,  KC_QUOT,
         KC_LSFT,  KC_Z,     KC_X,     KC_C,     KC_V,     KC_B,     KC_LBRC,  KC_RBRC,  KC_N,     KC_M,     KC_COMM,  KC_DOT,   KC_SLSH,  KC_RSFT,
                                       KC_LCTL,  KC_LALT,  LY_LWR,   KC_SPC,   KC_ENT,   LY_RSE,   KC_RGUI,  KC_APP
     ),
 
+    /* Lower layer: http://www.keyboard-layout-editor.com/#/gists/19ad0d3b5d745fbb2818db09740f5a11 */
     [LAYER_LOWER] = LAYOUT(
         _______,  _______,  _______,  _______,  _______,  _______,                      _______,  _______,  _______,  _______,  _______,  _______,
-        KC_EQL,   KC_1,     KC_2,     KC_3,     KC_4,     KC_5,                         KC_6,     KC_7,     KC_8,     KC_9,     KC_0,     KC_MINS,
-        _______,  KC_F1,    KC_F2,    KC_F3,    KC_F4,    KC_F5,                        KC_F11,   KC_F12,   KC_INS,   KC_DEL,   _______,  _______,
-        _______,  KC_F7,    KC_F8,    KC_F9,    KC_F10,   KC_F11,   _______,  _______,  KC_LBRC,  KC_RBRC,  KC_GRV,   KC_BSLS,  _______,  _______,
+        KC_TILD,  KC_EXLM,  KC_AT,    KC_HASH,  KC_DLR,   KC_PERC,                      KC_CIRC,  KC_AMPR,  KC_ASTR,  KC_LPRN,  KC_RPRN,  _______,
+        _______,  _______,  _______,  _______,  _______,  _______,                      KC_PIPE,  KC_LCBR,  KC_RCBR,  KC_UNDS,  KC_PLUS,  _______,
+        _______,  _______,  KC_CAPS,  KC_PSCR,  KC_SLCK,  KC_PAUS,  _______,  _______,  KC_BSLS,  KC_LBRC,  KC_RBRC,  KC_MINS,  KC_EQL,  _______,
                                       _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______
     ),
 
+    /* Raise layer: http://www.keyboard-layout-editor.com/#/gists/912be7955f781cdaf692cc4d4c0b5823 */
     [LAYER_RAISE] = LAYOUT(
         _______,  _______,  _______,  _______,  _______,  _______,                      _______,  _______,  _______,  _______,  _______,  _______,
-        KC_PLUS,  KC_EXLM,  KC_AT,    KC_HASH,  KC_DLR,   KC_PERC,                      KC_CIRC,  KC_AMPR,  KC_ASTR,  KC_LPRN,  KC_RPRN,  KC_UNDS,
-        _______,  _______,  _______,  _______,  _______,  _______,                      KC_LEFT,  KC_DOWN,  KC_UP,    KC_RGHT,  KC_HOME,  KC_PGUP,
-        _______,  _______,  KC_CAPS,  KC_PSCR,  KC_SLCK,  KC_PAUS,  _______,  _______,  KC_LCBR,  KC_RCBR,  KC_TILD,  KC_PIPE,  KC_END,   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_F1,    KC_F2,    KC_F3,    KC_F4,    KC_F5,                        KC_LEFT,  KC_DOWN,  KC_UP,    KC_RGHT,  KC_HOME,  KC_PGUP,
+        _______,  KC_F6,    KC_F7,    KC_F8,    KC_F9,    KC_F10,   _______,  _______,  KC_F11,   KC_F12,   KC_INS,   KC_DEL,   KC_END,   KC_PGDN,
                                       _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______
     ),
 
+    /* Adjust layer: http://www.keyboard-layout-editor.com/#/gists/8f6a3f08350a9bbe1d414b22bca4e6c7 */
     [LAYER_ADJUST] = LAYOUT(
         _______,  _______,  _______,  _______,  _______,  _______,                      _______,  _______,  _______,  _______,  _______,  _______,
         _______,  KC_MPLY,  KC_VOLU,  KC_MSTP,  _______,  _______,                      EEP_RST,  RESET,    _______,  _______,  _______,  _______,
diff --git a/keyboards/lily58/keymaps/bcat/readme.md b/keyboards/lily58/keymaps/bcat/readme.md
new file mode 100644
index 0000000000..4b269706a7
--- /dev/null
+++ b/keyboards/lily58/keymaps/bcat/readme.md
@@ -0,0 +1,59 @@
+# bcat's Lily58 layout
+
+This split ergo layout is standard QWERTY on the default layer, with symbols on
+the lower layer, numbers/navigation on the raise layer, and media keys centered
+around the WASD cluster in the adjust (raise + lower) layer. A few general
+principles went into this layout:
+
+* The number row is optional, as are the outermost bottom row keys and the
+"extra" keys on the innnermost columns below the controllers. This will enable
+easy translation to a Crkbd or similar 40% ortho if I go that route.
+
+* Space and Enter are on the big thumb keys so they're easy to press
+(particularly with G20 or other low-profile keycaps there).
+
+* There are two shift keys because really, Right Shift is important.
+
+* Arrow keys are on VIM-style HJKL keys.
+
+* Home/End and Page Up/Page Down are easy to reach and in a square kind of like
+on the HHKB.
+
+* Escape is easy to reach because Vim.
+
+* Since most of the modifiers are on the left half, keys frequently pressed
+together with mods (e.g., numbers, function keys, etc.) are on the Raise layer
+activated by the right thumb.
+
+* Every key on a TKL has a binding.
+
+* Backspace is bound in the same place on every layer to avoid having to let go
+of layer-shift keys to fix a mistake.
+
+* Brackets and braces are on or near the home row for quick access when coding.
+
+* Other than Right Shift (sorry), modifiers aren't rebound on layers.
+
+## Default layer
+
+![Default layer layout](https://i.imgur.com/NjIp4Qr.png)
+
+([KLE](http://www.keyboard-layout-editor.com/#/gists/e0eb3af65961e9fd612dcff3ddd88e4f))
+
+## Lower layer
+
+![Lower layer layout](https://i.imgur.com/FyioHWW.png)
+
+([KLE](http://www.keyboard-layout-editor.com/#/gists/19ad0d3b5d745fbb2818db09740f5a11))
+
+## Raise layer
+
+![Raise layer layout](https://i.imgur.com/8Mrz4FF.png)
+
+([KLE](http://www.keyboard-layout-editor.com/#/gists/912be7955f781cdaf692cc4d4c0b5823))
+
+## Adjust layer
+
+![Adjust layer layout](https://i.imgur.com/FRKNqZp.png)
+
+([KLE](http://www.keyboard-layout-editor.com/#/gists/8f6a3f08350a9bbe1d414b22bca4e6c7))