add reducing implementation

src/lib/lib.ts

@@ -1,5 +1,6 @@
 export { Dict } from "./dict.ts";
 export { BaseGuesser } from "./guesser/base.ts";
+export { ReducingGuesser } from "./guesser/reducing.ts";
 export { Simulator } from "./game/simulator.ts";
 export { ManualProxy } from "./game/proxy.ts";
 export { Runner } from "./runner.ts";