feat: more ui, looping

src/BeatLike.ts

@@ -0,0 +1,11 @@
+import {IPublisher} from "./Publisher";
+import {BeatEvents} from "./Beat";
+
+export default interface BeatLike extends IPublisher<BeatEvents>{
+    setBarCount(barCount: number): void;
+    getBarCount(): void;
+    setLooping(isLooping: boolean): void;
+    isLooping(): boolean;
+    setLoopLength(loopLength: number): void;
+    getLoopLength(): number;
+}