Fix attackingTargetGuid read

Signed-off-by: Yaki Khadafi <elsoldollo@gmail.com>
Merge branch 'master' of https://github.com/TrinityCore/WowPacketParser
Create class Bit, allowing stuff like guid[x] = packet.ReadBit(); (for var guid = new byte[8])
4.3.4 Few corrections to SMSG_VOID_ITEM_SWAP_RESPONSE and CMSG_VOID_SWAP_ITEM
Update WowPacketParser/Parsing/Parsers/VoidStorageHandler.cs
Change Bit class to struct
Correct 434 SMSG_AUTH_RESPONSE
4.3.4 CMSG_JOIN_CHANNEL
commented 2 booleans in CMSG_JOIN_CHANNEL
Corrected some MSG_CHANNEL_START comments
Merge pull request #82 from Zakamurite/attackingTargetGuid_fix

SMSG_UPDATE_OBJECT/CreateObject: Attacking target guid byte order fix (4.3.4)
4.3.4 Fix CMSG_SET_TRADE_ITEM
4.3.4: Handler for SMSG_GUILD_BANK_LIST
Identify one field from previous commit
4.3.4: Handler for SMSG_LFG_JOIN_RESULT
4.3.4: SMSG_LFG_PLAYER_REWARD
Found most unknown fields in void storage handlers
4.3.4: SMSG_LFG_PROPOSAL_UPDATE
4.3.4: Handler for SMSG_LFG_QUEUE_STATUS (WIP: many unks there)
4.3.4 Corrections to SMSG_VOID_ITEM_SWAP_RESPONSE