experiment with svgload as a sequential loader
experiment with svgload as a sequential loader

see https://github.com/libvips/libvips/issues/1425

lovell/libvips,lovell/libvips,lovell/libvips,jcupitt/libvips,jcupitt/libvips,jcupitt/libvips,lovell/libvips,jcupitt/libvips