• Internally using mainly codecs (more efficient and less boilerplate in source code).
• Ability to switch to different implementations, even at the same time, this allows to use several Json implementations at the same time.
• Unify Codec types, no more ConcreteCodec vs tupled codecs, just a simple 4 params Codec type.
• A new and recommended Codec syntax for records and DUs trough an Applicative CE.
• Internal caching of codecs.
• Ability to workaround codecs for interfaces.
• jopt combinator works with all types supportingzero, so in addition to option we can use voption, nullable or even list.
• Native support for bigint, vtuple, voption, TimeSpan, NonEmptyList, NonEmptySet, NonEmptyMap, and "Generic Map" (Maps where keys are not strings).
• DateOnly and TimeOnly support for .net6 users

0.9.0 - October 28 2021

• Added Result codec and overload
• Fix problem decoding null values into Options.
• Fix parsing of floats for infinities and nan.
• Fix parsing of Datetime when using newtonsoft.json

• Added System.Text.Json implementation
• Support for enums and all tuple sizes
• Fix: error reporting wrong index in 7-uples
• FSharpData use its own type for JsonObject
• Added missing ofJson/toJson support for JsonValue and JsonObject
• Upgrade to FSharpPlus 1.1.1

Netstandard support
NewtonSoft Json support
Friendlier API
Null keys are filtered out in JSON objects