Encoder as PIDSource

[jwakeman]

It is nice that the Encoder class can be used as a PIDSource now but it ends up that it still doesn't help me. I am using one encoder for both position AND speed feedback. Not a problem tho i just create two classes, RatePIDSource and PositionPIDSource. I pass a reference to a single Encoder into the constructor of these two objects and in their PIDGet() return distance or rate accordingly.