layouts: Adjust layout-sizes to the correct aspect-ratios

and fix some other issues, to make the layouts more consistent.

The aspect-ratios of the layouts,
should now match the intended aspect-ratios (12:7 and 16:5),
with 3 decimal-digits of precision; either exactly,
or rounded to be a little more square,
so that the entire height of the panel will be used.
Adding 0.001 to `width` in the `default`-outlines of the layouts,
would make the layouts a little wider than the intended aspect-ratio.

Part-of: <https://gitlab.gnome.org/World/Phosh/squeekboard/-/merge_requests/691>

data/keyboards/bg.yaml

@@ -1,15 +1,15 @@
 # Language: Bulgarian
 ---
 outlines:
-    default:       { width: 32.72,  height: 52 }
-    change-view:   { width: 50.12,  height: 52 }
-    change-view-2: { width: 58.99,  height: 52 }
-    fill:          { width: 65.44,  height: 52 }
-    placeholder:   { width: 32.72,  height: 52 }
-    spaceline:     { width: 167.26, height: 52 }
-    special:       { width: 44,     height: 52 }
-    special-2:     { width: 50.12,  height: 52 }
-    special-3:     { width: 58.99,  height: 52 }
+    default:       { width: 32.415,  height: 52 }
+    change-view:   { width: 48.622,  height: 52 }
+    change-view-2: { width: 56.726,  height: 52 }
+    fill:          { width: 64.83,   height: 52 }
+    large:         { width: 48.622,  height: 52 }
+    placeholder:   { width: 32.415,  height: 52 }
+    spaceline:     { width: 145.869, height: 52 }
+    special:       { width: 48.622,  height: 52 }
+    special-2:     { width: 56.726,  height: 52 }
 
 views:
     base:
@@ -21,7 +21,7 @@ views:
         - "У Е И Ш Щ К С Д З Ц Б"
         - "Ь Я А О Ж Г Т Н В М Ч"
         - "show_upper Ю Й Ъ Ф Х П Р Л BackSpace"
-        - "show_numbers preferences space , Return"
+        - "show_numbers preferences space ,-large Return"
     numbers:
         - "1 2 3 4 5 6 7 8 9 0"
         - "@ # € % & - _ + ( )"
@@ -31,7 +31,7 @@ views:
         - "~ ` | · √ π τ ÷ × ¶"
         - "© ® £ $ ¥ ^ ° * { }"
         - "show_numbers_from_symbols -- \\ / < > = [ ] BackSpace"
-        - "show_letters preferences space , Return"
+        - "show_letters preferences space ,-large Return"
 
 
 buttons:
@@ -43,7 +43,7 @@ buttons:
         outline: "change-view"
         icon: "key-shift"
     BackSpace:
-        outline: "special-2"
+        outline: "special"
         icon: "edit-clear-symbolic"
         action: "erase"
     preferences:
@@ -74,7 +74,7 @@ buttons:
         outline: "spaceline"
         text: " "
     Return:
-        outline: "special-3"
+        outline: "special-2"
         icon: "key-enter"
         keysym: "Return"
     --:
@@ -87,4 +87,9 @@ buttons:
     √:
         outline: "fill"
     ¥:
-        outline: "fill"
+        outline: "fill"
+    .:
+        outline: "large"
+    ",-large":
+        outline: "large"
+        text: ","