Changes for version 0.20
- Major Added multiple worksheets and OLE wrapper. Now compatible with Star Office, Gnumeric and XESS.
- Spreadsheet::BIFFwriter - Abstract base class for Excel workbooks and worksheets.
- Spreadsheet::OLEwriter - Writes BIFF data into a OLE compound storage file.
- Spreadsheet::Workbook - A writer class for Excel Workbooks.
- Spreadsheet::Worksheet - A writer class for Excel Worksheets.
- Spreadsheet::WriteExcel - Write text and numbers to a cross-platform Excel binary file.