- tests register1 and register2 passing

src/lib.rs

@@ -3,10 +3,10 @@ pub mod bspline;
 pub mod error;
 pub mod filter;
 pub mod metric;
+pub mod optimize;
 pub mod par_indexed_iter;
 pub mod register;
 pub mod transform;
-mod optimize;
 
 use ndarray::prelude::*;
 use num::Complex;