Artillery added

We just released our first artillery sets. Each set contains two cannon and 10 different crewmen, you also have the option to include two artillery officers and some resin bases with crew slots to your set. 

Our first sets are the heavy artillery, a 24-pounder cannon, which is usually used as siege artillery, but sometimes also as a field cannon (as the Dutch had at Ramillies), and a 16-12-pounder cannon, the heaviest field cannon in most armies.