Versioning support for serde.
When software are developped and used at the same time the data formats may change from one version to another and persisting data may be produced by a specific version and loaded by another version.
Serde version provide a versioning feature for serde for the main use cases.
See the guide here.
Note 1: Requires the specialization feature.
Note 2: Use the derive feature to generate the DeserializeVersioned implementation
We aim at solving the case were a type or a set of types in a deserializer's data needs to be upgraded to their latest format. This is the case when a mandatory property was added or removed, or an existing property changed.
This is based on types that can be upgraded individually. Types that needs to be upgraded together is way more complex to handle and usually relies on domain specific deserializer.
So, these data format should be handle with specific Deserialize traits implementations.