Versions

How the runtime is versioned, and what changed.

Current runtime: 0.2.0.

Rules

The script has one address without a version, /swidget/swidget.js. Each release replaces the file.
The version is named in the first line of the file and in window.sWidget.version. The changes below list what each version changed.
Each version also has an ES module, swidget.esm.js, beside swidget.js. It exports the same widgets and mount API and draws nothing until it is called.
Each release adds 0.0.1; version numbers that contain a 3 or a 4 are skipped.

Pickup point picker: the chosen place is written into the named form field.
Signed-in orders: the sign-in window opens during the click, so Safari and iOS no longer block it.
Guest orders: cancel a shipment, download its label, and My shipments; countries are chosen from a list.
New script tag attributes: data-locale, data-theme, data-accent and data-input-name.
window.sWidget with mount, unmount, destroy, scan and on; snippets added later are drawn too.
Refusals are named in the console and in the swidget:error event.
CSS custom properties, ::part names and a dark theme.
Focus stays in place while the widget redraws; groups, labels and required fields are marked for assistive technology; pickup points are a keyboard list.
One address without a version, /swidget/swidget.js, and the ES module swidget.esm.js.

First release: tracking, quote, shipping order (guest or signed in) and pickup point picker.