Cleaned

Added

• Spreadsheet.performWrite() method has been added in order to return the OutputStream created by the SpreadsheetWriter

Changed

• The Cell API has been cleaned
• The Row API has been cleaned
• The SpreadsheetWirter API has been cleaned
• The implementations of SpreadsheetWirter have been renamed

Deprecated

• Spreadsheet.write() has been deprecated, use Spreadsheet.performWrite() instead.