community/py3-django-model-utils: new aport

https://github.com/jazzband/django-model-utils Django model mixins and utilities

added aports:add label

added 4 commits

• 04fec9b5...a7346643 - 3 commits from branch alpine:master
• 9ac140b8 - community/py3-django-model-utils: new aport

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merged