chore: prepare release 0.3.1 (#52)

Author: schwma

CHANGELOG.md

@@ -5,18 +5,12 @@ 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 0.4.0 - tbd
-
-### Added
-
-### Changed
+## Version 0.3.1 - 2023-02-28
 
 ### Fixed
 
 - Add `app` folder to `files` property of `package.json` to be included for publishing to `npm`
 
-### Removed
-
 ## Version 0.3.0 - 2023-02-27
 
 ### Changed

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@cap-js/graphql",
-  "version": "0.4.0",
+  "version": "0.3.1",
   "description": "CDS protocol adapter for GraphQL",
   "keywords": [
     "CAP",