New features:
- Microsoft Office Excel 2007 file format: binary file format (BIFF12)
- Scale options for chart axis

Improvements:
- Formula processing improvements

Bug fixes:
- XLS : Missing data table for a chart object in a worksheet
- XLS : Lost chart object in worksheer after resaving the xls file
- XLS : Load the font settings of the chart area
- XLS : Images GUID
- XLSX: Formulas with arrays containing string values
- XLSX: Load rich text format
- XML : Freeze panes