3.21.2
======
* Clean up surface <-> shell interaction [Jonas; #763431]
* Fix grabbing random keys for disabled shortcuts [Rui; #766270]
* Fix stacking of hidden windows on wayland [Rui; #764844]
* Misc. bug fixes [Victor, Florian, Marek, Rui; #766306, #766326, #751847,
  #763832, #766528]

Contributors:
  Jonas Ådahl, Emmanuele Bassi, Marek Chalupa, Matthias Clasen,
  Carlos Garnacho, Rui Matos, Florian Müllner, Victor Toso

Translations:
  Tiago Santos [pt], Cédric Valmary [oc], Muhammet Kara [tr]