Changelog update - v0.3.1 (#24)

Co-authored-by: GitHub Action <[email protected]>

Author: github-actions[bot]

CHANGELOG.md

@@ -1,9 +1,11 @@
 # Changelog
 
 ## [Unreleased]
-### Fixed
-- `TypedDict` subclasses being displayed as a regular dict in type hints
-- Several bugs around `async` functions with type hints
+
+## [0.3.1] - 2022-10-02
+### Fixed
+- `TypedDict` subclasses being displayed as a regular dict in type hints
+- Several bugs around `async` functions with type hints
 - Other minor type hints corrections
 
 ## [0.3.0] - 2022-09-25