Move make/unmake and History on Game

src/board/fen.rs

@@ -25,7 +25,10 @@ pub fn from_fen(fen: &str) -> Result<Game, FenError> {
         halfmove_clock,
         fullmove_counter,
     ));
-    Ok(Game { board })
+    Ok(Game {
+        board,
+        history: History::new(),
+    })
 }
 
 pub fn piece_placement(pieces: &str) -> Result<Board, FenError> {
@@ -123,6 +126,8 @@ fn castling_ability(castling: &str) -> Result<[Castle; 2], FenError> {
 
 use std::collections::HashMap;
 
+use super::history::History;
+
 fn en_passant_square(square: &str) -> Result<Option<usize>, FenError> {
     let mut sqr = square.chars();