Update CHANGELOG.md

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Author: CodeLieutenant

CHANGELOG.md

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+# Changelog
+
+## [v0.1.0](https://github.com/CodeLieutenant/mailpitclient/releases/tag/v0.1.0) (2025-09-13)
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+[Full Changelog](https://github.com/CodeLieutenant/mailpitclient/compare/4feacf17001e3cde7566c808c7678863641bac56...v0.1.0)
+
+
+
+\* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/github-changelog-generator/github-changelog-generator)*