4.19.0 - Add new macro XDT_CHECK_PACKAGE_BINARY - Add new macro XDT_CHECK_OPTIONAL_FEATURE - Add check for xsltproc (#60) - Add Tumbler plugins dependencies to CI build - xfce-do-release: added OS dependent sed and make detection - xfce-do-release: added user settable sed and make - xdt-autogen: Fixed wrong make displayed on FreeBSD - Add libxfce4windowing to the API docs HTML index - Add libxfce4windowing to CI build