move coremem/mat -> coremem/sim/legacy/mat

crates/coremem/src/lib.rs

@@ -9,7 +9,6 @@ use log::info;
 
 pub mod driver;
 pub mod geom;
-pub mod mat;
 pub mod meas;
 pub mod render;
 pub mod sim;
@@ -17,10 +16,10 @@ pub mod stim;
 pub mod util;
 
 pub use driver::*;
-pub use mat::*;
 pub use sim::*;
 pub use coremem_types as types;
 pub use coremem_types::real;
+pub use coremem_types::mat;
 
 // Some things to keep in mind:
 // B = mu_r*H + M