Memory Leak

Worksheet points to Table, Table points back to Worksheet. Circular reference prevents garbage collection. Remove Table collection in Worksheet at destruct time to avoid this problem.

src/PhpSpreadsheet/Worksheet/Worksheet.php

@@ -444,6 +444,7 @@ public function __destruct()
 
         $this->disconnectCells();
         $this->rowDimensions = [];
+        $this->removeTableCollection();
     }
 
     /**