// Scenario tests for the simulation: whole scenes stepped to a verdict, as
// opposed to the arithmetic checks that sit beside the code they exercise.
// In-crate rather than under `tests/` so the sim API they drive does not have
// to be public to be testable.
modccd;modcharacter;modcontact_events;modheightfield;modjoints;modparallel;modsensor;modsettling;modsurface;