Formula referencess not updated after InsertCols

[CSHornby]

Description
Formula references are not updated after using InsertCols.

Steps to reproduce the issue:

1. Create a formula in cell F5 that references C5 + D5 + I5
2. InsertCols at column C or D or G

Describe the results you received:
Formula references are not updated, so formula still reads C5 + D5 + I5

Describe the results you expected:
Formula references should be updated to:
D5 + E5 + J5 for insert at C
C5 + E5 + J5 for insert at D
C5 + D5 + J5 for insert at G

Output of go version:

go version go1.20.5 linux/amd64

Excelize version or commit ID:

v2.7.2-0.20230703160637-e2c74162925c

Environment details (OS, Microsoft Excel™ version, physical, etc.):
Ubuntu Linux on laptop

[xuri]

Thanks for your issue. As the documentation of the InsertCols function says: "which will affect changes in references such as formulas, charts, and so on. If there is any referenced value of the worksheet, it will cause a file error when you open it. The excelize only partially updates these references currently". I'll consider adding support for this in the future.

[xuri]

This library now support this feature, please upgrade to the master branch code, and this feature will be released in the next version.