* converted CMSG_INITIATE_TRADE, SMSG_TRADE_STATUS, SMSG_TRADE_UPDATED and CMSG_ACCEPT_TRADE to packet class * fixed enchanting items via trade * handle unknown fields in SMSG_TRADE_UPDATED
* converted CMSG_INITIATE_TRADE, SMSG_TRADE_STATUS, SMSG_TRADE_UPDATED and CMSG_ACCEPT_TRADE to packet class * fixed enchanting items via trade * handle unknown fields in SMSG_TRADE_UPDATED