Release version 1.10.0 "Idempotence"

- Xwayland support
- Keys' press zone extends to the side edges of the widget
- Layout popover separates languages from special layouts
- Popover can open settings
- Keyboard is invisible when GNOME accessibility setting is off
- Layout tester checks for presence of Backspace and Return
- Adjusts the keyboard size better to tablet-sized displays
- Friulian keyboard layout
- Ukrainian layout
- Belgian layout
- Wide French layout
- Wide Belgian layout
- Wide terminal layout
- Improved tutorial
- Improved README
- Stricter compilation checks
- Minor fixes

meson.build

@@ -1,7 +1,7 @@
 project(
     'squeekboard',
     'c', 'rust',
-    version: '1.9.3',
+    version: '1.10.0',
     license: 'GPLv3',
     meson_version: '>=0.51.0',
     default_options: [