First release, v0.2.0, of my project KotlinX serialization standard serializers (ks3) is now available on Central. It provides serializers for common JDK types (LocalDate, LocalDateTime, Instant, etc.), some multiplatform standards (ByteArray as base64-string, Enum as ordinal serializer) as well as utilities for writing and testing your own serializers more easily. Feel free to post feedback and/or feature requests:
https://github.com/Kantis/ks3 K