Default to an objectMode: true instance but allow creating other instances with other defaults

tests/utils/collected.spec.ts

@@ -1,7 +1,6 @@
 import test from "ava";
 import { collected } from "../../src/utils";
-import { strom } from "../../src";
-const { fromArray, collect } = strom({ objectMode: true });
+import { fromArray, collect } from "../../src";
 
 test("collected returns a promise for the first data point", async t => {
     const data = collected(fromArray([1, 2, 3, 4]).pipe(collect()));