flask-marshmallow>=0.12.0

[ghost]

With the release of Flask-Marshmallow 0.12.0 (2020-04-26), the ma.ModelSchema got depreceated. You should be switching to ma.SQLAlchemySchema or ma.SQLAlchemyAutoSchema.

See more at https://flask-marshmallow.readthedocs.io/en/latest/changelog.html#id2

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[ghost]

@googlebot I signed it!

[bluec0re]

Thanks for the PR :)