docs: Update CHANGELOG for 0.2.0 (#86)

Signed-off-by: Ian Lewis <ianlewis@google.com>

CHANGELOG.md

@@ -5,19 +5,19 @@ 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]
+## [0.2.0] - 2023-06-30
 
-## Changed in X.Y.Z
+## Changed in 0.2.0
 
 - Leading whitespaces is now trimmed from TODOS in multi-line comments.
 - The `--include-hidden` option was replaced with the `--exclude-hidden`
   option and including hidden files was made the default.
 
-## Fixed in X.Y.Z
+## Fixed in 0.2.0
 
 - Hidden, Vendored, and Docs files are now properly excluded by default.
 
-## Removed in X.Y.Z
+## Removed in 0.2.0
 
 - The `--include-docs` option was removed.
 
@@ -51,3 +51,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [unreleased]: https://github.com/ianlewis/todos/compare/v0.1.0...HEAD
 [0.0.1]: https://github.com/ianlewis/todos/releases/tag/v0.0.1
 [0.1.0]: https://github.com/ianlewis/todos/releases/tag/v0.1.0
+[0.2.0]: https://github.com/ianlewis/todos/releases/tag/v0.2.0