Added CMSG_MOVE_FEATHER_FALL_ACK, SMSG_MOVE_FEATHER_FALL,
   SMSG_MOVE_NORMAL_FALL, CMSG_UNK_0123, SMSG_UNK_1C33
Added CMSG_READ_ITEM, SMSG_READ_ITEM_OK
Added SMSG_UNK_0E1B
Added SMSG_UNK_0170