Pymancer
Pymancer
If we have multiple hidden columns in a row only first column letter will be stored in column_dimensions by openpyxl, and pyexcel checks the hidden column state by it's letter,...
Opening xlsx file with `rs = pyexcel.iget_book(file_name='./some_file.xlsx', skip_hidden_row_and_column=False, detect_merged_cells=True)` causes an error `'ReadOnlyWorksheet' object has no attribute 'merged_cells'.` May be at https://github.com/pyexcel/pyexcel-xlsx/blob/54ee10c3c755f93841714bfe48af05f3abdcfc06/pyexcel_xlsx/xlsxr.py#L201 should be ```python if self.skip_hidden_row_and_column or self.detect_merged_cells: ```...