Handling of the merged cells

[kagalenko-m-b]

There is a loss of information when importing spreadsheet files with merged cells. Take, for instance, this pair of files, created with LibreOffice: test.xlsx, test_merged.xlsx. The second file had been made from the test.xlsx by merging the cells in the second column (Format -> Merge Cells).

julia> d = XLSX.readxlsx(fp*"test.xlsx").workbook.sheets[1]
2×2 XLSX.Worksheet: ["Sheet1"](A1:B2) 

julia> d1 = XLSX.readxlsx(fp*"test_merged.xlsx").workbook.sheets[1]
2×2 XLSX.Worksheet: ["Sheet1"](A1:B2) 

julia> d.cache.cells == d1.cache.cells
true

[kagalenko-m-b]

This issue is causing me some problems, any chance of a fix?