Sun Apr 16 15:21:23 CEST 2017

--- 1.0.18 ---
Use AC_USE_SYSTEM_EXTENSIONS.
Build .xz tarball too.
Use RandR data to populate screens structure.
Remove unused Mode.display.xinerama_active.
Refactor some screen stuff.
Refactorization in WarpFocus().
Window list: Show windows on same head as pointer first.
Drop incomplete HAVE_STDARG_H stuff.
Fix warning with recent pango.
Warning fixes for gcc 7.