Merge branch 'mod' into 'master'

inc/lektor/config.h

inc/lektor/module/module_sdl2.h

inc/lektor/module/module_x11.h

inc/lektor/net.h

inc/lektor/window.h

meson.build

src/config.c

src/main/server.c

src/module/module_sdl2.c

src/module/module_x11.c

src/module/repo.c

src/net/listen.c

src/reg.c