* rename Layout -> LayoutData
* simplify zone
* split ZoneSet: Layout
* refactoring
* split ZoneSet: LayoutWindows
* update trace
* split ZoneSet: remove ZoneSet
* fix initialization
* split unit tests
* remove unused
* warning
* nullptr check
* use current rect
* update work area tests
* use current rect
* simplify
* more meaningful name
* dismiss
* safety checks
* resolve conflicts
* reassign windows after switching vd
* avoid double-processing for window on switching vd
* extend windows fix
* check if window is on current desktop before cycling
* separated extend
* not reinit layout windows
