Reading list of merged cells impossible in read-only mode
*Created originally on Bitbucket by [hrobertson (Hamish Robertson)](https://bitbucket.org/%7Ba846ee0b-f7a6-4b29-a5b9-c308ee5e511c%7D/)* The worksheet.merged_cells and worksheet.merged_cell_ranges properties are both empty of the workbook has been opened in read-only mode. As this is data regarding the status of the worksheet, and in no way coupled to writing to the worksheet, I can see no reason why this would not be included.
issue