Add 0.2.0 release notes

Author: shyiko

CHANGELOG.md

@@ -5,7 +5,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased](https://github.com/altinity/ice/compare/v0.1.1...master)
+## [Unreleased](https://github.com/altinity/ice/compare/v0.2.0...master)
+
+## [0.2.0](https://github.com/altinity/ice/compare/v0.1.1...v0.2.0)
+
+### Added
+- Ability to specify `ice` config via `ICE_CONFIG_YAML` env var and `ice-rest-catalog` config via `ICE_REST_CATALOG_YAML`.
+
+### Changed
+- `ice --partition/--sort` to accept YAML and not just JSON.
 
 ## [0.1.1](https://github.com/altinity/ice/compare/v0.1.0...v0.1.1)