adding changelog

Author: SamuelBellomo

CHANGELOG.md

@@ -20,7 +20,7 @@ Additional documentation and release notes are available at [Multiplayer Documen
 * Updated boss room's root scene to automatically load child scenes at editor time (#653)
 
 ### Changed
-* Bump NGO to pre.9 (#643)
+* Bump NGO to pre.10 (#678) --> Fix in Boss Room related to the connection approval breaking change.
 * Bump Boss Room to Unity 2021 [MTT-3022] (#620)
 * Remove initial ugs popup [MTT-3563] (#650) --> Users who do not use UGS will no longer receive a popup when starting the application telling them how to set it up. It is replaced with a tooltip that appears when hovering on the "Start with Lobby" button with the cursor.
 * Folders and assemblies refactor MTT-2623, MTT-2615 (#628) --> work in progress