Ask about instructions for migration to new version

Hello, may I kindly ask you about providing some instructions for migration to new version to facilitate this process for other developers?
Especially, I found that config.py should be modified in suche way:
`options.view_as(SetupOptions).setup_file = str(reflect.materialize_setuppy())` instead of
`setup_file_path = resolve(find_or_create_setup_for_main_project_package())
requirements_file_path = resolve(get_resource_absolute_path('requirements.txt'))`
and the second thing is about method in setup.py `bigflow.build.setup` should be used to avoid warnings about deprecation
Hope it will be useful, thanks!