Remove use of flags UNIT_FLAG_NON_ATTACKABLE and UNIT_FLAG_REMOVE_CLIENT_CONTROL
Replace with correct one, UNIT_FLAG_UNK_31, imunity part now is fully handled by auras
Fix a problem with bugged orientation while casting SPELL_SYNCH_HEALTH
Use std::crono notations
Remove unneeded code
Move one spell_linked_spell to SpellScript
Fix Loot issue
Fix Possible Crash