Shift-Pad update #1

[KeyPuncher]

Hello all! The initial design of Shift-Pad is mostly done, there's enough here for me to start coding. The great thing about doing the design ahead of time is that it allows me to start solving issues before they become a problem. I've designed it in such a way that it is a much more flexible and modular system. There are abstractions that will allow the core code to be shared across platforms and break dependencies on code for the UI and connection interfaces. I'm also designing it to be much easier to extend, meaning adding new controller types won't require a full recompile of the application, just an add of a plugin.