Releasing version 1.3.0

Author: LaunchDarklyReleaseBot

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-1706236105
+1729812329
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 a:1:{i:0;s:70:"phpDocumentor-projectDescriptor-files-c44d8d71b03ed1a364f14bd3937a5b32";}

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 All notable changes to the project will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org).
 
+## [1.3.0] - 2023-10-25
+### Changed:
+- Expanded SDK version support to v6
+
 ## [1.2.1] - 2023-01-25
 ### Fixed:
 - Fixed compatibility error with PHP SDK 5.x branch.