[Docs] Update changelog and bump version

Author: lindyhopchris

CHANGELOG.md

@@ -3,7 +3,7 @@
 All notable changes to this project will be documented in this file. This project adheres to
 [Semantic Versioning](http://semver.org/) and [this changelog format](http://keepachangelog.com/).
 
-## Unreleased
+## [3.3.0] - 2021-02-06
 
 ### Added
 
@@ -13,8 +13,9 @@ All notable changes to this project will be documented in this file. This projec
   adapter.
 
 ### Fixed
-- [#576](https://github.com/cloudcreativity/laravel-json-api/issues/576) Correctly pass existing resource values to
-  JSON values, before merging client values for validation.
+
+- [#576](https://github.com/cloudcreativity/laravel-json-api/issues/576) Correctly pass existing resource values to JSON
+  values, before merging client values for validation.
 
 ## [3.2.0] - 2020-11-26