const everywhere + légèrement changer format fichiers

src/Core/PiecesList.h

@@ -69,22 +69,22 @@ class PiecesList {
         /**
          * @return The highest loaded size of pieces
          */
-        int getHighestLoadedSize();
+        int getHighestLoadedSize() const;
 
         /**
          * @return The number of pieces of the specified size
          */
-        int getNumberOfPieces(int size);
+        int getNumberOfPieces(int size) const;
 
         /**
          * @return The indexes of all selected pieces
          */
-        std::vector<std::pair<int, int>> getSelectedPieces();
+        std::vector<std::pair<int, int>> getSelectedPieces() const;
 
         /**
          * @return The piece corresponding to the specified index
          */
-        Piece getPiece(std::pair<int, int> pieceIndex);
+        Piece getPiece(std::pair<int, int> pieceIndex) const;
     
     private:
         /**