Chassis Changes

After some reflection on the rigidity of the Chassis system in comparison to the relative freedom of all the other equipment, I decided to make them branch out a bit! Now, instead of a single level up benefit at levels 0, 1, 3, 5 and 7, you now have three choices (for each chassis!) at levels 3, 5 and 7. Hopefully this change will make the chassis feel a little less linear and encourage players to experiment a little. I also hope that this change will make it easier for GMs to add their own options to level-ups. 

This change also comes with two new unique stances, for the Bulwark and the Scout as level up benefits. The Gunner already had Suppressing Fire, so the lack of one for the other two Chassis was a design oversight.

I've also added one new weapon, but working on more stuff!