Add missing setters for pageSizeW and pageSizeH

Author: spikex

src/PhpWord/Style/Section.php

@@ -239,6 +239,13 @@ public function getPageSizeW()
         return $this->pageSizeW;
     }
 
+    public function setPageSizeW($value = null)
+    {
+        $this->pageSizeW = $this->setNumericVal($value, self::DEFAULT_WIDTH);
+
+        return $this;
+    }
+
     /**
      * Get Page Size Height
      *
@@ -249,6 +256,13 @@ public function getPageSizeH()
         return $this->pageSizeH;
     }
 
+    public function setPageSizeH($value = null)
+    {
+        $this->pageSizeH = $this->setNumericVal($value, self::DEFAULT_HEIGHT);
+
+        return $this;
+    }
+
     /**
      * Get Margin Top
      *