Make sure m_KnownEntitiesUpdatePending is also reset upon level pre init.
Fix matchmaking buf for tags not null terminated, potentially causing issues/wrong behavior.
Update CEF implementation for multi-threaded message loop. Most changes are to ensure it does not access stuff from the game thread which are unsafe. Still some issues to solve, so not enabled yet.
Fix UnicodeDecodeError exception when converting player name to Python string. Invalid characters should be ignored.