Add web front-end and fix API issues

node_modules/rxjs/dist/esm5/internal/scheduler/async.js

@@ -0,0 +1,5 @@
+import { AsyncAction } from './AsyncAction';
+import { AsyncScheduler } from './AsyncScheduler';
+export var asyncScheduler = new AsyncScheduler(AsyncAction);
+export var async = asyncScheduler;
+//# sourceMappingURL=async.js.map