This release contains various bugfixes, some useful features and important performance improvements. It also uses Kotlin 1.5.20 as default.

Features

• Support for @JsonNames and coerceInputValues in Json.decodeFromDynamic (#1479)
• Add factory function to wrap a serial descriptor with a custom name for custom delegating serializers (#1547) (thanks to Fadenfire)
• Allow contextually serialized types to be used as map keys in Json (#1552) (thanks to pdvrieze)

Bugfixes and performance improvements

• Update size in JsonStringBuilder slow-path to avoid excessive array-copies for large strings with escape symbols (#1491)
• Optimize integer encoding length in CBOR (#1570) (thanks to davertay)
• Throw JsonDecodingException instead of ClassCastException during unexpected null in TreeJsonDecoder (#1550)
• Prohibit 'null' strings in lenient mode in order to get rid of 'null' and "null" ambiguity (#1549)
• Avoid usage of reflective-like serialDescriptor<KType> in production sources (#1540)
• Added correct error message when deserializing missing enum member for Properties format (#1539)
• Make DescriptorSchemaCache in Json thread-local on Native (#1484)