Added in a new agent for initial testing. Mostly done, might change some stuff for balance, bugfixing or general improvement before it hits the actual main branch.
The agent is `The Saviour'. General concept is that you threaten a nation with either war or disease, then The Saviour `rescues' them, either by defeating the enemy or curing the disease. The nobles then love the saviour, and you can exploit this to either infiltrate better, influence politics via trading liking for votes, or boost the prestige of your political enthralled noble.