Made Iter the default export

mod.test.ts

@@ -5,7 +5,7 @@ import {
 } from "https://deno.land/std/testing/asserts.ts";
 import { add } from "https://deno.land/x/[email protected]/mod.ts";
 
-import { Iter } from "./mod.ts";
+import Iter from "./mod.ts";
 import { none, some } from "./option.ts";
 import { Result } from "./result.ts";
 import { cmpNumbers, parseIntegral } from "./util.ts";

mod.ts

@@ -58,7 +58,7 @@ type IntoIter<T> = Iterable<T> | Iterator<T>;
  * 
  * @template T the type to iterate over
  */
-export class Iter<T> implements IterableIterator<T> {
+export default class Iter<T> implements IterableIterator<T> {
   private readonly iter: Iterator<T>;
 
   /**