Update set_config.itervalues() to be Python 3 compatible. Cherrypicked from https://github.com/fromzeroedu/flask_uploads/commit/bd35ec2cb74e0bdb0ad34a944c2a663c2806944a Fixes #14
Update set_config.itervalues() to be Python 3 compatible. Cherrypicked from https://github.com/fromzeroedu/flask_uploads/commit/bd35ec2cb74e0bdb0ad34a944c2a663c2806944a Fixes #14

jeffwidman/flask-uploads,jeffwidman/flask-uploads