Cleanup lib exports (#50)

src/lib/index.ts

@@ -0,0 +1,10 @@
+export { default as AudioPlayer, default as default } from './Player.svelte';
+export { default as AudioProgress } from './Progress.svelte';
+export * from './actions';
+export * from './attributes';
+export * from './metadata';
+export * from './user-preferences';
+export * from './user-progress';
+export * from './utility/format-seconds';
+
+// export type { AudioMetadata } from './audio-metadata';