new prelude

src/lib.rs

@@ -89,6 +89,13 @@ pub mod uci;
 /// The eschac prelude.
 pub mod prelude {
     pub use crate::{
-        bitboard::Bitboard, board::*, position::Position, san::San, setup::Setup, uci::UciMove,
+        bitboard::Bitboard,
+        board::Piece,
+        board::{ByCastlingSide, ByColor, ByFile, ByRank, ByRole, BySquare},
+        board::{CastlingSide, Color, File, Rank, Role, Square},
+        position::Position,
+        san::San,
+        setup::Setup,
+        uci::UciMove,
     };
 }