4.20.1 - wayland: Use labwc's --session option if available - wayland: Don't pass xfce4-session to the optional compositor cmdline - build: Add missing dep flags - build: Automate copyright year management - build: Replace xdt-csource with glib-compile-resources - build: Define xfce4 min version >= 4.18 - scripts: Make xflock4 blocking again - startxfce4: Fix keyboard layout on wayland - scripts: Remove unused .in level in xinitrc - build: Add missing checks for headers - build: Fix wrong include guard - build: Add missing check for sigprocmask - autotools-build: Check for xfce4-dev-tools in configure.ac - build: Add missing dep flags - build: Get rid of maintainer mode where gdbus-codegen is used - Improve Wayland support - Translation Updates: Basque, Catalan, Danish, Hungarian, Portuguese (Brazil), Russian, Slovak, Ukrainian, Vietnamese