Excavation rebalance: base chance to find a relic increased, effect of excavation depth on relic chance reduced, effect of excavation depth on action cost reduced, resource yield not affected.
The Yields tab for cities below equilibrium control now also shows how many resources the city is expected to yield once it reaches equilibrium control.
City details now show the rate of change for Current Control and Prosperity.
Minor adjustments to various numbers (shouldn't be noticeable to most players).