3.21.4 ====== * Fix missing frame border around GTK+ dialogs [Florian; #745060] * Improve X11 <-> wayland copy and paste interaction [Carlos; #768007] * Add support for NV_robustness_video_memory_purge extension [Rui; #739178] * Fix restoring the old focused window on restart [Owen; #766243] * Fix fullscreen windows on other monitors stealing focus after closing a window [Rui; #768221] * Draw monitor content to individual framebuffer [Jonas; #768976] * Provide screen capture API [Jonas; #768978] * Misc. bug fixes and cleanups [Rui, Owen, Luca, Olivier, Jonas, Carlos; #767969, #768243, #762407, #767997, #768039, #768977, #768977] Contributors: Jonas Ådahl, Luca Bruno, Olivier Fourdan, Carlos Garnacho, Rui Matos, Florian Müllner, Owen W. Taylor Translations: Andika Triwidada [id]