Add version 1.3.0 notes

CHANGELOG.md

@@ -3,6 +3,14 @@ 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).
 
+## Beta 1.3.0
+- Improved game file backups
+- Added file explorer to seperate form
+- Added mods search textbox
+- Added games and resources categories
+- Added installed game mods section
+- Added game information
+
 ## Beta 1.2.0
 This update mainly includes improvements to the core functionality for installing and uninstalling mods.