coding style

src/Dibi/DataSource.php

@@ -224,7 +224,7 @@ class DataSource implements IDataSource
 	/**
 	 * Returns this data source wrapped in DataSource object.
 	 */
-	public function toDataSource(): DataSource
+	public function toDataSource(): self
 	{
 		return new self($this->__toString(), $this->connection);
 	}

src/Dibi/Drivers/SqlsrvDriver.php

@@ -10,7 +10,6 @@ declare(strict_types=1);
 namespace Dibi\Drivers;
 
 use Dibi;
-use Dibi\Connection;
 use Dibi\Helpers;
 
 

src/Dibi/Reflection/Column.php

@@ -10,7 +10,6 @@ declare(strict_types=1);
 namespace Dibi\Reflection;
 
 use Dibi;
-use Dibi\Type;
 
 
 /**