Fix in StackedDeck for draw
Fix in StackedDeck for draw

StackedDeck didn't subtract by one when a card was drawn.

slaymaker1907/hearthbreaker,noa/hearthbreaker,anuragpapineni/Hearthbreaker-evolved-agent,Ragowit/hearthbreaker,danielyule/hearthbreaker,pieiscool/edited-hearthbreaker,pieiscool/edited-hearthbreaker,anuragpapineni/Hearthbreaker-evolved-agent,kingoflolz/hearthbreaker,anuragpapineni/Hearthbreaker-evolved-agent,jirenz/CS229_Project,slaymaker1907/hearthbreaker