[skip ci] Update changelog.

Author: github-actions

docs/changelog.md

@@ -6,6 +6,16 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
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+## Unreleased
+
+<small>[Compare with latest](https://github.com/seandstewart/python-typelib/compare/v0.1.2...HEAD)</small>
+
+### Bug Fixes
+
+- correct handling optional types ([79e431a](https://github.com/seandstewart/python-typelib/commit/79e431a4dac984f1b9a096d44a389c08e569ad73) by Sean Stewart).
+
+<!-- insertion marker -->
+
 ## [v0.1.2](https://github.com/seandstewart/python-typelib/releases/tag/v0.1.2) - 2024-10-16
 
 <small>[Compare with v0.1.1](https://github.com/seandstewart/python-typelib/compare/v0.1.1...v0.1.2)</small>