add Debug for Bimap & BimapTypeDict

src/bimap.rs

@@ -2,6 +2,7 @@ use std::{collections::HashMap, hash::Hash};
 
 //<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>\\
 
+#[derive(Debug)]
 pub struct Bimap<V: Eq + Hash, Λ: Eq + Hash> {
     pub mλ: HashMap<V, Λ>,
     pub my: HashMap<Λ, V>,

src/dict.rs

@@ -28,6 +28,7 @@ pub trait TypeDict {
 
 //<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>\\
 
+#[derive(Debug)]
 pub struct BimapTypeDict {
     typenames: Bimap<String, TypeID>,
     type_lit_counter: u64,