update changelog

Author: ffrostfall

CHANGELOG.md

@@ -2,7 +2,12 @@
 
 This project uses [semantic versioning](https://semver.org/spec/v2.0.0.html).
 
-## [version 0.5.5](): 8/26/2023
+## [version 0.5.6](): 9/25/2023
+
+### Added
+- Now uses a system to manage package verison control w/ instances. This ensures that even if you're running 2 separate versions of BridgeNet2, it will communicate correctly, and everything will work as expected.
+
+## [version 0.5.5](https://github.com/ffrostflame/BridgeNet2/releases/tag/v0.5.5): 8/26/2023
 
 ### Fixes
 - All coroutine.resume instances have been replaced with task.spawn. This fixes a lot of obscure bugs.