4.0.0

• Update dependencies and add esm module

[Breaking change]

No more dist folder, you will find releases in umd and esm folders.

- https://unpkg.com/[email protected]/dist/CancelablePromise.min.js
+ https://unpkg.com/[email protected]/umd/CancelablePromise.min.js
+ https://unpkg.com/[email protected]/esm/CancelablePromise.min.mjs

[Feature] ESM module

<script type="module">
  import { cancelable } from 'https://unpkg.com/[email protected]/esm/CancelablePromise.min.mjs';
</script>