added important TODO

src/lib.rs

@@ -242,6 +242,7 @@ pub fn decompress_point(bb: [u8; 32]) -> Result {
 // }
 
 fn blh(b: &[u8]) -> Vec<u8> {
+    println!("TODO: add test that this new blake512 function is giving correct output. Not doing so could have unlikely yet critical implications");
     let mut h = Blake2b512::new();
     h.update(b);
     let digest = h.finalize();