D3473: Window Tabbing support in kwin

[Chinmoy Ranjan Pradhan]

chinmoyr abandoned this revision.

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D3473

To: chinmoyr, #plasma, #kwin, graesslin
Cc: plasma-devel, kwin, ZrenBot, progwolff, lesliezhai, ali-mohamed, hardening, 
jensreuterberg, abetts, sebas, apol, mart, lukas