Add Unreleased section to CHANGELOG

CHANGELOG.md

@@ -5,6 +5,26 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](https://semver.org/).
 
+## [Unreleased]
+
+### Changed
+
+- New stage names: experimental and live.
+- Use separate asset bucket per-stage.
+- Use live stage by default.
+- Load `public/index.html.mustache` template from asset CDN to render index.
+- Remove `.bucket` before building.
+
+### Added
+
+- Use `appVersion` cookie to select version if set.
+- Restrict bucket access to CloudFront origin access identity.
+- Version number to page title.
+
+### Fixed
+
+- TTL settings in CloudFront.
+
 ## 0.2.0
 
 - Initial release.