Option to keep empty rows (#331)

* Add option to preserve empty rows when reading an XLSX file
* Add option to preserve empty rows when reading a CSV file
* Add option to preserve empty rows when reading an ODS file

src/Spout/Reader/CSV/Reader.php

@@ -119,8 +119,9 @@ class Reader extends AbstractReader
             $this->filePointer,
             $this->fieldDelimiter,
             $this->fieldEnclosure,
-            $this->encoding,
             $this->endOfLineCharacter,
+            $this->encoding,
+            $this->shouldPreserveEmptyRows,
             $this->globalFunctionsHelper
         );
     }