We have added a Gift Upgrades feature that allows you to gift an account upgrade to another member, just in time for the holiday season. You can see the gift option when going to the Account Upgrades screen, or on any user profile screen.
This minor update allows you to add more Civilizations to your game in single player by adjusting the Map Size (NOTE that this option will not actually change the map's size; just the number of Civilizations).
Adjusted some city-state locations (note that most city-states still aren't in their True Start Locations due to the limited space in Europe, which is primarily reserved for actual Civilization True Start Locations).
With the Update on 12/21/2016, City-States stopped appearing on the map. This Update should be copy and pasted in you Mods folder, overwriting all the files in PSE. This should resolve the issue of missing City-States. Sorry for the inconvenience and hope you keep enjoying this map!