Dwarves will now no longer be able to discover electricity without the needed sub-technologies. As of right now, anyone who discovers electricity before the world is listed in legends as being killed by lightening.
Sucessful revolutions occuring in Pure democracies will no longer kill every single person who has ever voted.
And as a special request from the modders, I have included syntax for non-standard sub-nuclear reactions. I would list it here, but The non-modding populations brain would explode.