copy_worksheet crashes for worksheet with a merged cell

Issue #1074 duplicate
Henrik Berglund
created an issue

It seems to be a problem copying an excel sheet with merged cells in it. The error messager is:

"...\AppData\Local\Programs\Python\Python36-32\lib\site-packages\openpyxl\worksheet\cell_range.py", line 136, in copy title=self.title) TypeError: init() got an unexpected keyword argument 'min_col'

Attaching 5-line program and 1-line excel file to reproduce.