Technical Doco Update

Today I got around to revising some sections of the tech doc to make it clearer so we were all on the same page with the classes. The fighting engine's event manager events needed clarification, as did the IController interface; and the Fighter, Human, AI classes needed to be documented entirely. I also added in documentation for various information-holding structs, such as ControlInstructions, and some state-information structs such as WorldState. All of this new documentation is basically related to the fighting engine, where most of the progress in the project is focused on at present.