Exposing radar method so that owners can force the update
Refactored TicketVehicle.IsInNeighborhood to be more profiling-friendly
Removed unnecessary Clamp on blendIntoAccumulator
Improved TickedVehicle.AccelerationSmoothRate documentation

As Sebastian Ludwig had pointed out, the documentation for the
acceleration smooth rate was mistaken.  Fixed, elaborated.
Switched speed comparison on AutonomousVehicle to use Approximately
Updating change log before releasing 2.5.1