Support toggling key preview popup at runtime
Fixes #111 (closed)
Note: if !125 (merged) is merged first, then this MR will need to be amended to include the config option description in osk-sdl.5
cc @cherrypicker
Fixes #111 (closed)
Note: if !125 (merged) is merged first, then this MR will need to be amended to include the config option description in osk-sdl.5
cc @cherrypicker