Merge Reader and Writer entities

Merged Cell/Row/Style entities

src/Spout/Writer/WriterMultiSheetsAbstract.php

@@ -3,11 +3,11 @@
 namespace Box\Spout\Writer;
 
 use Box\Spout\Common\Creator\HelperFactory;
+use Box\Spout\Common\Entity\Row;
 use Box\Spout\Common\Helper\GlobalFunctionsHelper;
 use Box\Spout\Common\Manager\OptionsManagerInterface;
 use Box\Spout\Writer\Common\Creator\ManagerFactoryInterface;
 use Box\Spout\Writer\Common\Entity\Options;
-use Box\Spout\Writer\Common\Entity\Row;
 use Box\Spout\Writer\Common\Entity\Sheet;
 use Box\Spout\Writer\Common\Entity\Worksheet;
 use Box\Spout\Writer\Common\Manager\WorkbookManagerInterface;