(ORG-3656)
Better Support of Other Columns in Unstack
When unstacking columns in a worksheet, "other columns" were not handled properly in previous version.
Origin 9.1 introduce options to handle data in other columns properly
- Matching Longest Group (same operation as 90)
- Combining All Groups
Pivot Table Improvements
Pivot table is improved to have proper logic when handling the cases for combining smaller values