Game Logging is now in
Added extra logic into DeathrattleSummonMinionAction to account for deathrattles that summon more than one minion (eg: Haunted Creeper)

Originally, for each minion summoned, the Sim would try to remove the deathrattling minion.  This doesn't work for multipule creature summons, as the first one removes the deathrattler and the next one tries to remove and already removed card.  So, there is a check to see if the deathrattler has already been removed (it's index is < 0) and then a check to make sure we don't have more than the max number of minions on the feild before summoning new minions.