Add web front-end and fix API issues

node_modules/rxjs/dist/esm5/internal/operators/subscribeOn.js

@@ -0,0 +1,8 @@
+import { operate } from '../util/lift';
+export function subscribeOn(scheduler, delay) {
+    if (delay === void 0) { delay = 0; }
+    return operate(function (source, subscriber) {
+        subscriber.add(scheduler.schedule(function () { return source.subscribe(subscriber); }, delay));
+    });
+}
+//# sourceMappingURL=subscribeOn.js.map