Fixed a crash caused by Knockback Level items using an unsupported stat modification type, and added a safeguard so it can't happen again. Ritual Bone of Striking, Starstone of the Void, Testament of Burning Wrath, and Tresses of the Drowned Maiden were rebalanced alongside the fix.
Fixed a rare host crash in multiplayer lobbies triggered by an unhandled error during the connection heartbeat.
