docs: add CHANGELOG.md

Author: Coding-Dev-Tools

CHANGELOG.md

@@ -0,0 +1,10 @@
+# Changelog
+
+## v0.2.0
+- Added encrypt/decrypt CLI commands
+- Moved revenueholdings-license to optional [license] extra
+
+## v0.1.0
+- Initial release
+- Generate, rotate, and revoke API keys and JWTs from the terminal
+- AES-256-GCM encrypted keystore