*2)* Added method workbook.GetSharedStrings() which returns the list of strings which will be shared in the workbook. 
*3)* Added method workbook.AddSharedString
*4)* Added Boolean property cell/range .ShareString with a default value of true. If set to false the cell's text will not be shared and stored as an inline value.
*5)* Copying a worksheet also copies Table definitions, NamedRanges, PageSetup, Outlines, etc.
*6)* Fixed issue with tables of the same name.
*7)* Implemented custom properties via workbook.CustomProperties and workbook.CustomProperty(name)
*8)* Added method cell.InsertData(collection) which returns a range that contains the data.
*9)* Added method cell.InsertTable(collection) which returns a table that contains the data.