Function dither_func_jajuni

pub fn dither_func_jajuni(data: &mut [u8], width: usize) -> Result<()>

Jajuni method

Transform coefficients
			curr	7/48	5/48
	3/48	5/48	7/48	5/48	3/48
	1/48	3/48	5/48	3/48	1/48