Updated for the most recent version of CK

- updated for 1.12.5
- minor tweaks to county control impact on spread/outbreak chances

- Control matters - very high (more than 90) county control slightly reduces spread, on the other hand, very low control (lower than 35) increases spread chance - these values are pretty low though
- outbreaks are just a little bit more rare
- minor outbreaks spread reduced to 6 counties max
- apocalyptic outbreaks cover a bit more land
- modified description of ingame plague resistance tooltip to reflect changes made
- additional spread reduction as an reward for reaching 100 resistance
- both very high (more than 90) and very low (less than 10) resistance affects character infection chances
- negative intellect traits increase spread chance while positive reduce it

- fixes
- added new traits influencing spread and outbreak chance
- various values adjustments
- increased development's impact on outbreak chances