ANNOUNCE: xfconf 4.21.1 released

xfconf 4.21.1 is now available for download from
  
  https://archive.xfce.org/src/xfce/xfconf/4.21/xfconf-4.21.1.tar.xz
  https://archive.xfce.org/src/xfce/xfconf/4.21/xfconf-4.21.1.tar.xz?sha1
  https://archive.xfce.org/src/xfce/xfconf/4.21/xfconf-4.21.1.tar.xz?sha256


What is xfconf?
===============

Xfconf is a flexible, easy-to-use configuration management system.

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


Release notes for 4.21.1
========================
[Please note that this is a development release.]

- Make libxfconf multithread-safe
- I18n: Update po/LINGUAS list
- build: Fix typo in optimization level
- README.md: Add uninstall info
- Update README after switchover to meson
- Update also .gitlab-ci.yml
- Remove autotools build
- common: Fix -Wlogical-op warning
- meson-build: Use configure_file() to generate GNU visibility files
- I18n: Update po/LINGUAS list
- Translation Updates:
  Arabic, Estonian, Georgian, Occitan (post 1500), Polish, Slovenian,
  Thai, Uyghur, Vietnamese