4.19.0 - Fix memory leak in jpeg-thumbnailer - Fix memory leak in cover-thumbnailer - build: Use m4_defined min versions and cleanup - build: Use XDT_CHECK_PACKAGE_BINARY - build: Use XDT_VERSION_INIT - build: Switch from intltool to gettext - Fix previous commit - cover-thumbnailer: Fix deprecation warning - cleanup: tumblerd: Use G_DECLARE_FINAL_TYPE and friends - cleanup: tumbler: Use G_DECLARE_FINAL_TYPE and G_DECLARE_INTERFACE - cleanup: plugins: Use G_DECLARE_FINAL_TYPE for plugins - cleanup: plugins: Use G_DECLARE_FINAL_TYPE for providers - build: Let xdt-depends.m4 macros set GLib macros - Translation Updates: English (Canada), Greek, Korean, Portuguese