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+# Changelog
+
+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).
+
+## [0.1.0] - 2026-01-06
+
+### Added
+- Initial release of `gsw`.
+- `gsw <config>`: Global configuration switching.
+- `gsw-local <config>`: Local (per-session) configuration switching via `CLOUDSDK_ACTIVE_CONFIG_NAME`.
+- Support for **Bash** and **Zsh**.
+- `install.sh` for one-line installation.
+- Automated tests using BATS and GitHub Actions.