- Add game rule for AI culture conversion likelyhood, comes with three options. Realistic, More Likely, and Arcade.

Update 1

- Add German localization (Written by PhazezGova, Thank you to PhazezGova)
- Add Simplified Chinese localization (MTL)
- Add AI logic for differing terrain conversion (AI are less willing to convert rough terrain provinces, cultures with specific rough terrain relevant traditions do not suffer this malus)
- Add AI logic for tradition/faith tenets, xenophilic/tolerant cultures are less likely to spread, while less tolerant/isolationist are more likely to spread
- Add AI logic for more decisive AI personalities: If zealous/bold/energetic/noncompassionate enough, to bypass all restrictions and culture convert no matter what, but is dependent on overall AI personality
- Conversion-rate finetuning

Thank you to Agami for modding assistance regarding ai_target_score.