- Added a wrapper class that handles the individual wrapping of event handlers to individually handle exceptions - now it tracks the wrapped event handlers so it can unregister them properly
- Fixed an exception that happened when two ECS objects were created with the same EGID
- Added support for returning an existing ECS object if it exists instead of always creating a new one
- Added a parameter to the entity query extension methods to override the group of the ECS object (could be used for the player properties)
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