Polymer/core-list — pull request #11 by debianw (2014-08-04 20:41:27+00:00)
Title: Append a reference to the original object

data changes are not detected since `core-list` is cloning the original data and using it as the model of the template.

This pull request suggest a reference to the original data, so We can bind original properties to the template using an underscore like in the example.

Example:

```html

```

With this approach template is binding the original properties and can detect changes.