Changes since 33.x.x

Protocol changes

EmotePacket has a new field int $emoteLengthTicks
InventoryContentPacket has new fields FullContainerName $containerName, int $dynamicContainerSize, int $dynamicContainerId field was removed
InventorySlotPacket has new fields FullContainerName $containerName, int $dynamicContainerSize, int $dynamicContainerId field was removed
ResourcePacksInfoPacket has removed fields BehaviorPackInfoEntry[] $behaviorPackEntries and bool $forceServerPacks
TransferPacket has a new field bool $reloadWorld, exact purpose unclear
UpdateAttributesPacket field Attribute[] $entries was replaced by UpdateAttribute[] $entries

LevelSoundEvent:
- The following types has been added:
  - IMITATE_DROWNED
  - BUNDLE_INSERT_FAIL
- The following types has been renamed:
  - RESPAWN_ANCHOR_BASALT_DELTAS_MOOD to AMBIENT_BASALT_DELTAS_MOOD
PlayerAction:
- The following types has been deprecated:
  - START_SPIN_ATTACK
PlayerAuthInputFlags:
- The following types has been added:
  - BLOCK_BREAKING_DELAY_ENABLED
  - HORIZONTAL_COLLISION
  - VERTICAL_COLLISION
  - DOWN_LEFT
  - DOWN_RIGHT
Added CameraAimAssistActionType, contains the following new types:
- SET
- CLEAR
Added CameraAimAssistTargetMode, contains the following new types:
- ANGLE
- DISTANCE
CameraPreset has new fields ?float $rotationSpeed, ?bool $snapToTarget, ?Vector3 $entityOffset
Added UpdateAttribute, contains the following fields:
- string $id
- float $min
- float $max
- float $current
- float $defaultMin
- float $defaultMax
- float $default
- array $modifiers
ContainerIds:
- The following types has been added:
  - CONTAINER_ID_REGISTRY
  - CONTAINER_ID_REGISTRY_INVENTORY
FullContainerName field int $dynamicId = 0 was modified to ?int $dynamicId = null
BehaviorPackInfoEntry was removed

PacketSerializer public function getAttributeList() : Attribute[] method was removed
Added some missing property getters in packets (cac5a16)
CameraTargetInstruction Use little-endian long for ActorUniqueId, thanks for the consistency mojang... :/ (440c807)