ANNOUNCE: garcon 4.21.0 released

[Gaël Bonithon]

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


What is garcon?
===============

Garcon is an implementation of the freedesktop.org menu specification
replacing the former Xfce menu library libxfce4menu. It is based on
GLib/GIO only and aims at covering the entire specification except for
legacy menus.

Website: 
  https://docs.xfce.org/xfce/garcon/start


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

- build: Automate copyright year management
- build: Define xfce4 min version >= 4.18
- Replace deprecated exo with libxfce4ui 4.21.0
- meson-build: Add tests option
- meson-build: Use SPDX license expression
- meson-build: Update debug/optimization flag management
- autotools-build: Fix EXTRA_DIST redefinition
- Add meson build
- Set up GNU symbol visibility
- garcon: Remove include guard from private header
- garcon: Don't install garcon-marshal.h
- Translation Updates:
  Albanian, Amharic, Arabic, Armenian, Armenian (Armenia), Asturian,
  Basque, Belarusian, Bengali, Bulgarian, Catalan, Chinese (China),
  Chinese (Hong Kong), Chinese (Taiwan), Croatian, Czech, Danish,
  Dutch, Eastern Armenian, English (Australia), English (United
  Kingdom), Esperanto, Estonian, Finnish, French, Galician, Georgian,
  German, Greek, Hebrew, Hindi, Hungarian, Icelandic, Indonesian,
  Interlingue, Italian, Japanese, Kabyle, Kazakh, Korean, Lithuanian,
  Malay, Norwegian Bokmål, Norwegian Nynorsk, Occitan (post 1500),
  Polish, Portuguese, Portuguese (Brazil), Romanian, Russian, Serbian,
  Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, Ukrainian,
  Uyghur, Welsh