title: Parsley.JS - Get an error list using callback
body: <p>In my project I don't want to display HTML errors, but throw an <code>alert()</code> with list of errors on formSubmit. I guess this should be done somehow by using <code>listeners:onFormSubmit</code> callback, however none of passed variables does not contain "clean" version of errors. Parsley documentation also lacks of this feature.</p>