Optimize code and update references

Author: hueifeng

src/EPPlus/EPPlus/CellStore.cs

@@ -28,7 +28,7 @@
  * ******************************************************************************
  * Jan Källman		    Added       		        2012-11-25
  *******************************************************************************/
-using Collections.Pooled;
+
 using OfficeOpenXml;
 using System;
 using System.Collections;
@@ -335,7 +335,7 @@ internal class CellStore<T> : IDisposable// : IEnumerable<ulong>, IEnumerator<ul
     internal const int ColSizeMin = 32;
     internal const int PagesPerColumnMin = 32;
 
-    PooledList<T> _values = new PooledList<T>();
+    List<T> _values = new List<T>();
     internal ColumnIndex[] _columnIndex;
     internal IndexBase _searchIx = new IndexBase();
     internal IndexItem _searchItem = new IndexItem();
@@ -675,7 +675,7 @@ internal void SetValue(int Row, int Column, T Value)
         }
     }
 
-    internal delegate void SetRangeValueDelegate(PooledList<T> list, int index, int row, int column, object value);
+    internal delegate void SetRangeValueDelegate(List<T> list, int index, int row, int column, object value);
     /// <summary>
     /// Set Value for Range
     /// </summary>
@@ -769,7 +769,7 @@ internal void SetRangeValueSpecial(int fromRow, int fromColumn, int toRow, int t
         }
     }
 
-    internal delegate void SetValueDelegate(PooledList<T> list, int index, object value);
+    internal delegate void SetValueDelegate(List<T> list, int index, object value);
     // Set object's property atomically
     internal void SetValueSpecial(int Row, int Column, SetValueDelegate Updater, object Value)
     {
@@ -1605,7 +1605,6 @@ public ulong Current
 
     public void Dispose()
     {
-        _values.Dispose();
         if (_values != null) _values.Clear();
         for (var c = 0; c < ColumnCount; c++)
         {

src/EPPlus/EPPlus/ConditionalFormatting/ExcelConditionalFormattingCollection.cs

@@ -36,6 +36,7 @@
 using SixLabors.ImageSharp;
 using System.Xml;
 
+
 namespace OfficeOpenXml.ConditionalFormatting
 {
     /// <summary>

src/EPPlus/EPPlus/DataValidation/ExcelDataValidationCollection.cs

@@ -32,6 +32,7 @@
  * Jan Källman		                License changed GPL-->LGPL  2011-12-27
  * Raziq York		                Added support for Any type  2014-08-08
 *******************************************************************************/
+
 using OfficeOpenXml.DataValidation.Contracts;
 using OfficeOpenXml.Utils;
 using System;

src/EPPlus/EPPlus/Drawing/Chart/ExcelChart.cs

@@ -29,6 +29,7 @@
  * Jan Källman		Added		2009-10-01
  * Jan Källman		License changed GPL-->LGPL 2011-12-16
  *******************************************************************************/
+
 using OfficeOpenXml.Packaging;
 using OfficeOpenXml.Table.PivotTable;
 using OfficeOpenXml.Utils;

src/EPPlus/EPPlus/Drawing/Chart/ExcelChartCollection.cs

@@ -29,6 +29,7 @@
  * Jan Källman		Added		2009-10-01
  * Jan Källman		License changed GPL-->LGPL 2011-12-16
  *******************************************************************************/
+
 using System;
 using System.Collections.Generic;
 

src/EPPlus/EPPlus/Drawing/Chart/ExcelChartSeries.cs

@@ -29,6 +29,7 @@
  * Jan Källman		Added		2009-10-01
  * Jan Källman		License changed GPL-->LGPL 2011-12-16
  *******************************************************************************/
+
 using OfficeOpenXml.Table.PivotTable;
 using System;
 using System.Collections;

src/EPPlus/EPPlus/Drawing/Chart/ExcelChartTrendline.cs

@@ -29,6 +29,7 @@
  * Jan Källman		Initial Release		        2011-05-25
  * Jan Källman		License changed GPL-->LGPL 2011-12-16
  *******************************************************************************/
+
 using System;
 using System.Collections.Generic;
 using System.Globalization;

src/EPPlus/EPPlus/Drawing/Chart/ExcelScatterChartSerie.cs

@@ -37,6 +37,7 @@
 using Magicodes.IE.EPPlus.SixLabors;
 using SixLabors.ImageSharp.PixelFormats;
 
+
 namespace OfficeOpenXml.Drawing.Chart
 {
     /// <summary>

src/EPPlus/EPPlus/Drawing/ExcelDrawings.cs

@@ -29,17 +29,17 @@
  * Jan Källman		License changed GPL-->LGPL 2011-12-16
  *******************************************************************************/
 
+
 using OfficeOpenXml.Drawing.Chart;
 using OfficeOpenXml.Table.PivotTable;
 using OfficeOpenXml.Utils;
+using SixLabors.ImageSharp;
+using SixLabors.ImageSharp.Formats;
 using System;
 using System.Collections;
 using System.Collections.Generic;
-using SixLabors.ImageSharp;
 using System.IO;
 using System.Xml;
-using SixLabors.ImageSharp;
-using SixLabors.ImageSharp.Formats;
 
 namespace OfficeOpenXml.Drawing
 {

src/EPPlus/EPPlus/Drawing/Vml/ExcelVmlDrawingCommentCollection.cs

@@ -29,6 +29,7 @@
  * Jan Källman		Initial Release		        2010-06-01
  * Jan Källman		License changed GPL-->LGPL 2011-12-16
  *******************************************************************************/
+
 using System;
 using System.Collections;
 using System.Collections.Generic;