Expected string but received: {0}
This error occurs when linky is used with a non-empty, non-string value:
<div ng-bind-html="42 | linky"></div>
linky is supposed to be used with string values only, and therefore assumes that several methods
(such as .match()) are available on the passed in value.
The value can be initialized asynchronously and therefore null or undefined won't throw this error.
If you want to pass non-string values to linky (e.g. Objects whose .toString() should be
utilized), you need to manually convert them to strings.