woothemes/woocommerce — pull request #5608 by ragulka (2014-06-03 10:58:54+00:00)
Title: Make checkout form multipart

It is sometimes desirable to be able to attach files to orders in checkout (especially with the Fees API). This PR simply allows uploading files with the checkout form by adding `enctype="multipart/form-data"` to the checkout form.

A sample use case would be if a store owner wants to offer an option to print a photo on the package/item for an extra fee.