Add and fix dead keys on layers 3 and 4 in Neo family layouts (#535)

* Update BracketRight key mapping in de_bone.json

Layer 4 modkey is a double acute accent, see https://www.neo-layout.org/Layouts/bone/

* Add Layer 3 and 4 dead keys to Neo 2 layout

See https://www.neo-layout.org/Layouts/neo/

* Add Layer 3 and 4 dead keys to Mine layout

See https://www.neo-layout.org/Layouts/mine/

* Add Layer 3 and 4 dead keys to Noted layout

https://www.neo-layout.org/Layouts/noted/

* Update Backquote character in de_bone layout (L4 dead key)

The layer 4 dead key on the backquote character is an overdot, see https://www.neo-layout.org/Layouts/bone/

Author: conquerist

packages/keybr-generators/layouts/de_bone.json

@@ -1,5 +1,5 @@
 {
-  "Backquote": ["*^", "*ˇ", "*↻", "*˞"],
+  "Backquote": ["*^", "*ˇ", "*↻", "*˙"],
   "Digit1": ["1", "°", "¹", "₁"],
   "Digit2": ["2", "§", "²", "₂"],
   "Digit3": ["3", "ℓ", "³", "₃"],
@@ -23,7 +23,7 @@
   "KeyO": ["m", "M", "=", "μ"],
   "KeyP": ["w", "W", "&", "ω"],
   "BracketLeft": ["ß", "ẞ", "ſ", "ϱ"],
-  "BracketRight": ["*´", "*~", "*/", "*᾿"],
+  "BracketRight": ["*´", "*~", "*/", "*˝"],
   "Backslash": "",
   "KeyA": ["c", "C", "\\", "χ"],
   "KeyS": ["t", "T", "/", "τ"],

packages/keybr-generators/layouts/de_mine.json

@@ -1,5 +1,5 @@
 {
-  "Backquote": ["*^", "*ˇ"],
+  "Backquote": ["*^", "*ˇ", "*↻", "*˙"],
   "Digit1": "1°",
   "Digit2": "2§",
   "Digit3": "3ℓ",
@@ -24,7 +24,7 @@
   "KeyP": "yY",
   "BracketLeft": "zZ",
   "BracketRight": "ßẞ",
-  "Backslash": ["*´", "*~"],
+  "Backslash": ["*´", "*~", "*/", "*˝"],
   "KeyA": "cC",
   "KeyS": "rR",
   "KeyD": "iI",

packages/keybr-generators/layouts/de_neo_2.json

@@ -1,5 +1,5 @@
 {
-  "Backquote": ["*^", "*ˇ"],
+  "Backquote": ["*^", "*ˇ", "*↻", "*˙"],
   "Digit1": "1°",
   "Digit2": "2§",
   "Digit3": "3ℓ",
@@ -23,7 +23,7 @@
   "KeyO": "fF",
   "KeyP": "qQ",
   "BracketLeft": "ßẞ",
-  "BracketRight": ["*´", "*~"],
+  "BracketRight": ["*´", "*~", "*/", "*˝"],
   "Backslash": "",
   "KeyA": "uU",
   "KeyS": "iI",

packages/keybr-generators/layouts/de_noted.json

@@ -1,5 +1,5 @@
 {
-  "Backquote": ["*^", "*ˇ"],
+  "Backquote": ["*^", "*ˇ", "*↻", "*˙"],
   "Digit1": "1°",
   "Digit2": "2§",
   "Digit3": "3ℓ",
@@ -24,7 +24,7 @@
   "KeyP": "fF",
   "BracketLeft": "jJ",
   "BracketRight": "ßẞ",
-  "Backslash": ["*´", "*~"],
+  "Backslash": ["*´", "*~", "*/", "*˝"],
   "KeyA": "cC",
   "KeyS": "sS",
   "KeyD": "iI",