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Nov 21, 2022
Case objects don't seem to work anymore as enum due to: com-lihaoyi/upickle#382
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Now,
case object Foois now serialized as"pkg.path.Foo", rather than{"$type": "pkg.path.Foo"}. This simplifies the output, and makes serializedsealed trait/case objecthierarchies look much more like simple enumerations when serialized. This harmonizes them with the simple serialization of Scalaenums in #378.case classes, even with zero parameters, are still serialized using the{"$type": "pkg.path.Foo"}encoding.This is a breaking change; uPickle with this change continues to be able to read the old format, but older versions of uPickle will not be able to read the new format. This will need to go into uPickle 2.0.0, with appropriate migration support to smooth the transition