better fits metadata
better fits metadata

copy fits metadata as entire records to stop parse/unparse differences
getting multiplied

leiyangyou/libvips,leiyangyou/libvips,lovell/libvips,leiyangyou/libvips,mcanthony/libvips,mcanthony/libvips,leiyangyou/libvips,lovell/libvips,jcupitt/libvips,jcupitt/libvips,wishabi/libvips,wishabi/libvips,wishabi/libvips,mcanthony/libvips,lovell/libvips,wishabi/libvips,mcanthony/libvips,lovell/libvips,jcupitt/libvips,jcupitt/libvips