One of the most talked-about moments from Game of Thrones season seven was when Arya Stark (Maisie Williams) murdered Petyr Baelish, a.k.a Littlefinger (Aidan Gillen), in front of literally everyone. It was a long time coming for fans, who had been waiting to see Littlefinger pay for all the scheming he’s done in Winterfell. I…