0.37.0
(feat): Discriminated unions are now forward-compatible. Each generated enum carries
#[non_exhaustive] and a final __Unknown(serde_json::Value) variant marked
#[serde(untagged)]. Unknown discriminant values (e.g. variants introduced
server-side after this SDK was generated) deserialize into __Unknown
instead of erroring, preserving the raw JSON payload for inspection and
round-trip serialization.
Forward-compatible unions can no longer derive Eq/Hash because
serde_json::Value doesn’t implement them. PartialEq is still derived.
