Now it is possible to use Eloquent's magic setters in chains. For example:
$model->set_foo('foo')->take(10)->set_bar(some_function());
// ...even though setters 'foo' and 'bar' are not defined on the model
When query time is larger than one second 'array_sum' cannot convert it
to float right. Also, it is better to fire 'laravel.query' event with
raw time as an argument rather than its string representation