4.9.0
City centers don't provide resources you don't have tech to extract
AI: Settlers no longer stuck in endless loops
modding: Fixed certain unit uniques with tile conditionals
AI clears inquisitors from city centers to make way for spaceship units
Add the SellBuilding Unique - By PLynx01
Add 'gain stat by game speed' and 'improvement speed with filter' uniques - By SeventhM
Add a TriggerUponDiscoveringTile unique - By karmaBonfire
Support for Leader voices - By SomeTroglodyte