Big patch to Civ5!

A huge patch to Civilization V has just been published! The list of changes is long and impressive. It contains multiple AI improvements on various aspects of the game. Several units and buildings have been tweaked and a couple of new national wonders have been added: Circus Maximus and the National Treasury. Furthermore, bonuses from maritime city-states have been reduced, the tech tree contains some new links and there are some UI, happiness and modding related improvements. As a result of this large patch some of the articles in this wiki may contain outdated information, so please don't hesitate to fix them or notify someone if you come across them!