Make RampedValue::isFinished time-accurate for flat ramps?

[morganpackard]

Consider the following

RampedValue().target(0).length(1000).isFinished()

This will evaluate to "true" even though the length was set to 1000. I've been working on ControlRampedValue, and finding that I want to use it as a timer, but the timer capabilities break when the value doesn't change (i.e. when the ramp goes from 0 to 0). I propose making isFinished time-based, rather than value-based.

[ndonald2]

That makes sense to me. Just FYI, you could also feasibly use ControlDelay or ControlPulse as a timer.