thank you for openpyxl.
Please find attached a patch to implement (very basic) 3d surface chart support.
I've started work on this using the bundle as a basis but I'm not sure this would ever work. Surface charts need a minimum of 2 series.
Resolves #81, #88, #97, #150, #172
→ <<cset e03e661c92d4>>
Removing version: NEXT (automated comment)