Created originally on Bitbucket by pikhovkin (Sergey Pikhovkin)
Changesets for this Pull Request have not been imported, because it had been already declined on Bitbucket. Marked as closed by the import user.
Fixed saving a document xltx, xltm to xlsx and xlsm respectively.
If document save from xltm template (it was created in MSExcel) to xlsm by openpyxl, then later MSExcel cann't open this document.