Change propagation fatal error to recoverable error (#1090)
Define unit traits and support arbitrary RZ field map units (#1088)* Add UnitSystem enum and traits visitor* Fix RZ field map input* Fix constexpr warnings* Apply fixes
Fix and avoid including algorithms header for ROOT/CLING (#1087)* Don't include ArrayUtils in Types* Don't rely on apple functions when using ROOT* IWYU for celeritas::forward