kohana/core — pull request #580 by evtaylor (2014-12-05 17:46:02+00:00)
Title: 3.4/feature/validate multi dimensional array

See http://dev.kohanaframework.org/issues/4035

```php
$array = array(
'user' => array(
'name' => 'Evan'
)
);

$validation = Validation::factory($array)
->rule('user.name', 'not_empty');
```