Define (default) postchanges that are always applied
Besides the default postchange, there should also be a warning, if meta data is not true. Because then it is not clear how many indices columns there are.
See postchanges.PostScenarioChangesBase(default=True)
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Note: the seed is not included in the default postchanges. Too many things can go wrong, so it is the users responsibility.
Edited by Ghost User