I don't like to declare every model as
use app\models\Country; 
Really it bothers me a lot. I like the approach  used in Yii 1.15 when you could load all models using import instruction in config like:
    'import' => array(
      'application.models.*', 
    )
Yes, I know it's not good for performance. But I have not more than 50 models and I care much more about my own performance rather than of performance of machine.
I had no luck in figuring out how to do it Yii2. All I found out is that it should be done via bootstrap option in main config file.
I tried the following:
 $config = [
   'language' => 'en',
   'id' => 'basicUniqueApp',
   'basePath' => dirname(__DIR__),
   'bootstrap' => [
     'log',
     'app\models\*'            
   ],
But it's not proper syntax.
Any ideas?