* Fixed structure for SMSG_SPELL_GO and SMSG_SPELL_START

* Updated structure for CMSG_CAST_SPELL
* Added opcode and updated structure for SMSG_AURA_UPDATE
* Added opcode and updated structure for SMSG_SPELLNONMELEEDAMAGELOG
Merge pull request #24 from Huri/master

* Fixed structure for SMSG_SPELL_GO and SMSG_SPELL_START