Update CHANGELOG

CHANGELOG.md

@@ -5,6 +5,21 @@ All notable changes to this project will be documented in this file.
 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).
 
+## Version 3.0.0 - 2024-03-21
+
+### Added
+
+- The matrix endpoint now accepts its own model rather than coordinate. This includes a search cutoff and paves the way for future expansion.
+
+### Changed
+
+- Improved the documentation of the matrix endpoint failure modes
+
+### Fixed
+
+- The time and distance field on matrix source to target models are now marked as nullable
+- Enum serialization (broken in the upstream OpenAPI generator)
+
 ## Version 2.1.0 - 2024-03-21
 
 ### Added

DEVELOPING.md

@@ -36,6 +36,7 @@ When making schema changes, you may need to temporarily remove [README.md](READM
 The following info is current as of v7.4.0.
 
 The current release of the generator's `python` generator does not generate entirely valid code.
-Specifically the `conlist`s are constructed with incorrect length arguments.
+Specifically the handling of enums is not correct, and they will not serialize to the expected values.
+We have added workarounds to api_client.py.
 
 The auto-generated code does not pass flake8, so we have disabled the checks.