Add CHANGELOG

Closes #25

Introduce a CHANGELOG.md following the Keep a Changelog format,
documenting the 2.0.x release line of the standalone gem.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: etagwerker

CHANGELOG.md

@@ -0,0 +1,53 @@
+# 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).
+
+## [Unreleased]
+
+### Changed
+
+- Pivot from Travis CI to GitHub Actions for continuous integration. ([#30](https://github.com/DatabaseCleaner/database_cleaner-sequel/pull/30))
+
+## [2.0.2] - 2022-03-08
+
+### Fixed
+
+- Allow empty options for the truncation strategy. ([#26](https://github.com/DatabaseCleaner/database_cleaner-sequel/pull/26))
+
+## [2.0.1] - 2022-03-01
+
+### Fixed
+
+- `Truncation.new` now takes a `Hash` as an argument instead of named parameters, to maintain Ruby 3 compatibility with `database_cleaner`'s calling convention. ([#20](https://github.com/DatabaseCleaner/database_cleaner-sequel/pull/20))
+- Rename the `:connection` configuration option to `:db` in the README.
+
+## [2.0.0] - 2021-01-31
+
+### Added
+
+- Add a `docker-compose.yml` for test database setup. ([#11](https://github.com/DatabaseCleaner/database_cleaner-sequel/pull/11))
+- Use auto savepoints for transactions.
+
+### Changed
+
+- Split `database_cleaner-sequel` out of the main `database_cleaner` repository into its own gem.
+- Update to the new adapter API from `database_cleaner` core.
+- Requiring this gem must now explicitly configure `DatabaseCleaner` to use it, since autodetection has been removed.
+- Drop support for Ruby 2.4, which reached end of life on 2020-03-31.
+- Drop support for the `mysql` (mysql1) adapter.
+- Upgrade dependencies and drop support for older Rubies.
+
+## [2.0.0.beta] - 2020-05-30
+
+### Changed
+
+- Begin development on the standalone `2.0.0` line of the gem.
+
+[Unreleased]: https://github.com/DatabaseCleaner/database_cleaner-sequel/compare/v2.0.2...HEAD
+[2.0.2]: https://github.com/DatabaseCleaner/database_cleaner-sequel/compare/v2.0.1...v2.0.2
+[2.0.1]: https://github.com/DatabaseCleaner/database_cleaner-sequel/compare/v2.0.0...v2.0.1
+[2.0.0]: https://github.com/DatabaseCleaner/database_cleaner-sequel/compare/v2.0.0.beta...v2.0.0
+[2.0.0.beta]: https://github.com/DatabaseCleaner/database_cleaner-sequel/releases/tag/v2.0.0.beta