jsonfg 0.1.0

Types for OGC Features and Geometries JSON (JSON-FG), a GeoJSON superset with support for arbitrary coordinate reference systems, solids, and curved geometries.
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# Changelog

All notable changes to this project are documented here.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased]

## [0.1.0] - 2026-07-17

Initial release.

### Added

- serde-based data model for OGC Features and Geometries JSON (JSON-FG 1.0,
  [OGC 21-045r1]): `Feature`, `FeatureCollection`, `Geometry`, `CoordRefSys`, `Time`,
  `Measures`, and supporting types.
- JSON-FG 1.0 Core plus the Polyhedra, Prisms, Circular Arcs, and Measures geometry
  types.
- Lossless round-tripping: unknown/foreign members (e.g. OGC API `links`) are preserved
  verbatim and member ordering is retained.
- The `place` / `geometry` split for conveying geometry in any coordinate reference
  system, with `coordRefSys`.
- Conformance-class URI constants and the JSON-FG media type in the `conformance` module.
- Optional `geojson` feature: `From`/`TryFrom` conversions to and from
  `geojson::Geometry` (arcs and solids return `NotGeoJson` when converting to GeoJSON).

[Unreleased]: https://github.com/360-geo/jsonfg/compare/v0.1.0...HEAD
[0.1.0]: https://github.com/360-geo/jsonfg/releases/tag/v0.1.0
[OGC 21-045r1]: https://docs.ogc.org/is/21-045r1/21-045r1.html