fix: export LastResult

Author: slikts

src/index.ts

@@ -1,6 +1,7 @@
 import Multicast from './adapters/Multicast';
 import Channel from './adapters/Channel';
+import LastResult from './adapters/LastResult';
 import Deferred from './Deferred';
 
-export { Multicast, Channel, Deferred };
+export { Multicast, Channel, Deferred, LastResult };
 export * from './from';