docxcompose is not longer installed as dependency in version 0.20.2

[stefankaufmann]

The following code does not work anymore after docxcompose has been removed from the required dependencies

my_template = DocxTemplate(some_path)
sub_doc = my_template.new_subdoc("subdoc1")

The error is

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

    # -*- coding: utf-8 -*-
    """
    Created : 2021-07-30
    
    @author: Eric Lapouyade
    """
    
    from docx import Document
    from docx.oxml import CT_SectPr
    from docx.opc.constants import RELATIONSHIP_TYPE as RT
>   from docxcompose.properties import CustomProperties
E   ModuleNotFoundError: No module named 'docxcompose'

Our requirements.txt file refers to docxtpl like

docxtpl~=0.20.0

Our code worked for version 0.20.1 and is broken for 0.20.2

Actually I think such a refactoring should not be part of a patch release but should at least have been part of a minor release. We pinned the version to be protected against such breaking changes.