Enhancement request: Pass through the event, which triggered from submission/validation

[makbeta]

First of all, thank you for writing this wonderful and flexible plugin.

I have one suggestion/enhancement request. I think one issue I ran into with this validating forms with multiple submit buttons. I had to do some workarounds to figure out which one of the submit buttons fired the event submission. I think passing through the event, which triggered the form submission/validation to the callback functions would solve the problem.

Ex:

 $.validate({
    form : '#registration-form',
    modules : 'security',
    onError : function($form, event) {
      console.log('this element started the event chain', event.target);
      alert('Validation of form '+$form.attr('id')+' failed!');
    },
    onSuccess : function($form, event) {
      console.log('this element started the event chain', event.target);
      alert('The form '+$form.attr('id')+' is valid!');
      return false; // Will stop the submission of the form
    },
    onValidate : function($form, event) {
      console.log('this element started the event chain', event.target);
      return {
        element : $('#some-input'),
        message : 'This input has an invalid value for some reason'
      }
    },
    onElementValidate : function(valid, $el, $form, errorMess) {
      console.log('Input ' +$el.attr('name')+ ' is ' + ( valid ? 'VALID':'NOT VALID') );
    }
  });

Thank you for your consideration.