A TrackballCamera that responds to input from mouse, keyboard, joystick and touch, in order to rotate around its parent node while continuously facing it.- stays around its parent node, even if it moves- no gimbal lock (quaternions ♥)- camera inertia for a smoother experience- the parent node does not have to be centered in the camera's view- a bunch of parameters to configure everything as you want it- won't work on godot 3
