docs: 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/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.3.0] - 2024-03-07
+
+### Changed
+
+- Bumped `cw-dex` to `0.5.3`
+- Use crates `cw-dex-astroport` and `cw-dex-osmosis` instead of the now deprecated features of `cw-dex`. This means moving the `Pool` enum to this crate.
+- Bump `cw2` to `1.1.2`
+- Bump `cw-it` to `0.3.1`
+- Bump `locked-astroport-vault` and `locked-astroport-vault-test-helpers` to `0.4.2`.
+- Bump `cw-vault-standard-test-helpers` to `0.4.1`.
+
+### Added
+
+- Added check that either `astroport` or `osmosis` features, or both, are enabled.
+
 ## [0.2.0] - 2023-11-06
 
 ### Changed