add changelog and release date (#40)

Author: johannes-vogel

CHANGELOG.md

@@ -5,9 +5,7 @@ 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).
 
-## Version 0.2.0 - tbd
-
-### Added
+## Version 0.2.0 - 2023-01-30
 
 ### Changed
 
@@ -19,8 +17,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Schema generation crash that occurred if an entity property is named `localized`
 - The field `totalCount` could not be queried on its own
 
-### Removed
-
 ## Version 0.1.0 - 2022-12-08
 
 ### Added

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@cap-js/graphql",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "description": "CDS protocol adapter for GraphQL",
   "keywords": [
     "CAP",