Siege Engineering gives Field Trebuchets +5% range

A new building chain has been added: Guilds
Guilds improve income province-wide, as well as the regional income of industry
When fully upgraded, they reduce the recruitment cost of knights by 5%

Added a new tier of Almshouse, the Peasant District
It gives +6 peasants, more growth, more income and a -10% recruitment cost to peasant units in the region

Autonomous collective gives +10 peasants instead of +1 peasants per region, and takes less time to research
Noble Honour has a new icon and takes one less turn to research, but no longer reduces upkeep for knights errant and knights of the realm