I should also state that we do use HTML Imports, for view loading, which is part of Web Components and we also use HTML Template Element, which is part of Web Components...and you can optionally use Shadow DOM...which is part of Web Components. What we don't do is use document.registerElement as part of our own custom element implementation because we would give up too much control over critical aspects of binding and resource loading.

So, we use 3/4 of the spec. One of the APIs we don't use...but we will allow you to export your Aurelia elements to a document.register form for v1.