v0.18.24 : support for `alloy#jsonUnknown`

New features

• Adds support for alloy#jsonUnknown, allowing to capture unknown JSON fields during deserialisation. See documentation here. See here and here
• Generated throwables are unconditionally enriched with a getMessage method mirroring the traditional toString implementation of case classes. See here

Other

• Update 15-validated-newtypes.md by @kubukoz in #1563
• fix: Add missing nano part when encoding timestamp to document by @ghostbuster91 in #1576

Full Changelog: v0.18.23...v0.18.24