chore: bump to v0.3.0

- Update version to 0.3.0
- Update CHANGELOG with new features

Author: 1

CHANGELOG.md

@@ -5,6 +5,12 @@ 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).
 
+## [0.3.0] - 2025-04-10
+
+### Added
+- Add output similarity scoring via `similarity.py`
+- Add Parquet serialization for snapshots in `parquet.py`
+
 ## [0.2.0] - 2026-04-10
 
 ### Added

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "modeldiff"
-version = "0.2.0"
+version = "0.3.0"
 description = "Behavioral regression testing for LLMs. Capture outputs, diff behavior, detect drift — pytest for model upgrades."
 readme = "README.md"
 license = {text = "Apache-2.0"}

src/modeldiff/__init__.py

@@ -1,6 +1,6 @@
 """modeldiff — behavioral regression testing for LLMs."""
 
-__version__ = "0.2.0"
+__version__ = "0.3.0"
 
 from modeldiff._types import (
     ChangeType,