This is a sandbox project, which contains experimental code for developer use only.
Add a single tracking number to a Commerce Order.
Store > Orders > Track Orders - Admin's can add a tracking number and carrier.
My Account > Track Orders - The user can view info on their account page.
The user link will attempt to forward the user to the carrier web site and track the package.
Store > Configuration > Order Tracking - Allows the site admin to set a default carrier and also decide if they want "pending" orders marked "completed".