knyaz etc titles are now for all east slavic cultures, including those in the Culture Expanded mod

1.16 and knyazitsa -> knyaginya

Updated english references of Rus Prince/Princess/Principality to Knyaz/Knyazitsa/Knyazhestvo to avoid confusion with other in-game principalities and more cultural flavour/immersion.

1.14 update and localization fix

decision localisations for non-English languages

1.13

Rus baron, count, and tribal duchies names fixed (thanks @Popee the Clown)

Updated for 1.12, updated mod description.
Fixed/updated localization (thanks for reporting the bug @✘ Poma).
Fixed bishop background not rendering (thanks for the bug report @雪大大尘).
Improved compatibility by removing copies of vanilla files (thanks @†UnDEAD†).