3.15.91
=======
* wayland: Fix nested compositor mode [Jonas; #745401]
* wayland: Fix pointer constraining [Marek; #727337]
* wayland: Fix input region on HiDPI [Jonas; #744933]
* Allow themes to style buttons differently based on function [Horst; #745108]
* Misc. bug fixes and cleanups [Ray, Rui, Alban; #745141, #745118, #745476,
  #745442]

Contributors:
  Jonas Ådahl, Alban Browaeys, Marek Chalupa, Horst, Rui Matos,
  Jasper St. Pierre, Ray Strode

Translations:
  Chao-Hsiung Liao [zh_TW], Efstathios Iosifidis [el], Dušan Kazik [sk],
  Balázs Úr [hu], Daniel Mustieles [es], Claude Paroz [fr], Stas Solovey [ru],
  Yosef Or Boczko [he], Rafael Ferreira [pt_BR], Aurimas Černius [lt],
  Fran Dieguez [gl], Anders Jonsson [sv], Мирослав Николић [sr, sr@latin]