Update Changelog.

Changelog.md

@@ -1,7 +1,31 @@
 # X.X.X (Next)
 
-- Fix automatic require
+* Fix automatic require
+* Fix the Libbz2::finalizer method.
+
+## Tooling and internal changes
+
+* Fix tests on Windows
+* Use github actions for CI
+* Add require statement to the example
+* Add LICENSE file
+* Use Markdown for the LICENSE and tidy up the README.
+* Update GitHub Actions workflows.
+* Update version of Rake to fix security alert.
+* Remove Pry and Guard development dependencies.
+* Update minimum version of RubyZip required.
+* Update MiniTest dependency.
+* Add a test to ensure correct version number format.
+* Add `bin/console'.
 
 # 0.0.1
 
-- Initial version
+* Initial version
+
+## About this Changelog file
+
+This file is, at least in part, generated by the following command:
+
+```shell
+$ git log --pretty=format:"* %s" --reverse --no-merges <commit-hash>..
+```