spreadsheet version 0.6.5.0 has been released!

The Spreadsheet Library is designed to read and write Spreadsheet Documents.
As of version 0.6.0, only Microsoft Excel compatible spreadsheets are
supported. Spreadsheet is a combination/complete rewrite of the
Spreadsheet::Excel Library by Daniel J. Berger and the ParseExcel Library by
Hannes Wyss. Spreadsheet can read, write and modify Spreadsheet Documents.

Changes:

### 0.6.5 / 07.12.2010

* 2 Enhancements courtesy to ISS AG.

* Outlining (Grouping) of lines and columns is now possible. The outlining
maximum is 8. This means you can do 8 subgroups in a group.

* Hiding and Unhiding of lines and columns is now possible.

* Both of above two points is now possible by creating a new Excel File from
scratch or editing an existing XLS and adding groups or hiding lines to it.