package:json_serializable v6.8.0

• Add type arguments to Map literals used for Record serialization.
• Add support for JsonSerializable(createJsonKeys: true).
  (#1401)
• Handle decoding an int value from a double literal.
  This now matches the behavior of double values being encoded as int.

package:json_annotation v4.9.0

• Require Dart 3.0
• Add JsonSerializable(createJsonKeys: true).
  (#1401)

package:json_serializable v6.7.1

• Support the latest package:analyzer.

package:json_serializable v6.7.0

• Support Record types.
• Require Dart 3.0
• Require analyzer: ^5.12.0