ANNOUNCE: xfce4-settings 4.21.0 released

[Gaël Bonithon]

xfce4-settings 4.21.0 is now available for download from
  
  https://archive.xfce.org/src/xfce/xfce4-settings/4.21/xfce4-settings-4.21.0.tar.xz
  https://archive.xfce.org/src/xfce/xfce4-settings/4.21/xfce4-settings-4.21.0.tar.xz?sha1
  https://archive.xfce.org/src/xfce/xfce4-settings/4.21/xfce4-settings-4.21.0.tar.xz?sha256


What is xfce4-settings?
=======================

Settings manager of the Xfce desktop.

Website: 
  https://docs.xfce.org/xfce/xfce4-settings/start


Release notes for 4.21.0
========================
[Please note that this is a development release.]

- build: Fix resource not found at runtime
- build: Automate copyright year management
- build: Replace xdt-csource with glib-compile-resources
- build: Define xfce4 min version >= 4.18
- Replace deprecated exo with libxfce4ui 4.21.0
- display-settings: Add missing update of /ActiveProfile
- Revert "settings-manager: Add xfce4-about"
- Update copyright year
- meson-build: Use SPDX license expression
- meson-build: Specify wayland-scanner as a native dependency
- meson-build: Update debug/optimization flag management
- build: Add missing dep flags
- Add meson build
- scan-build: Fix core.uninitialized.Assign
- build: Install missing helper opera-mailer.desktop
- build: Make gio-unix mandatory
- build: Simplify libxklavier version management
- Bump xfconf min version
- x11: displays: Delay RRScreenChangeNotify handling when DPMSModeOff
- build: Fix -Wmaybe-uninitialized
- xfsettingsd: Fix error handling in main()
- xfsettingsd: Don't disable DPI setting by default
- wayland: common: Add missing struct member initialization
- displays: Always enable first output
- Translation Updates:
  Albanian, Basque, Catalan, Danish, Estonian, Hungarian, Romanian,
  Russian, Slovak, Spanish, Ukrainian