[ { "type": "bugfix", "category": "", "description": "Fixes a bug in `ClientResolver` that would provide incorrect information on required parameters set to `null` when resolving a client." }, { "type": "api-change", "category": "GameLift", "description": "The Matchmaking Grouping Service is a new feature that groups player match requests for a given game together into game sessions based on developer configured rules." } ]