Configuration for key binds

[SwiftCoderJoe]

I am considering using Threebox for a project. For consistency, I would like the key binds for moving, dragging, and rotating 3D objects to be different. Looking through the code, it seems like it would be relatively simple to add some configuration options for key binds. Additionally, I want to include a way to make dragging possible without a keybind. ie, just click and drag.

I would be willing to submit a PR, but for the sake of not doing work that wouldn't be accepted, is this something the project is looking for/would accept?