Introduce Platform::outputAt()
With AbstractOutput being used more heavily, it makes sense to have something like Screens::number() in the Platform class. As is, the steps to get an output for a given point are awkward - first, get the screen id, then use the screen id to get the output.
outputAt() is perhaps not the best name. Maybe use something like outputNear()?
Edited by Vlad Zahorodnii