add release to changelog

CHANGELOG.md

@@ -4,6 +4,19 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [0.3.0] - 2020-08-01
+### Added
+- `getObject()`
+- `getArray()`
+- `getArrayOfStringToInt()`
+- `getArrayOfStringToBool()`
+- `getArrayOfStringToString()`
+
+### Fix
+- static classes instead of stateless type objects
+- separate finder classes
+- type asserts 
+
 ## [0.2.1] - 2020-07-18
 ### Fix
 - Psalm warnings (errorLevel="1")