C:\Repos\StepMania\src\Grade.cpp(56): error C2440: 'type cast': cannot convert from 'double' to 'Grade' [C:\Repos\StepMania\Build\src\StepMania.vcxproj]
C:\Repos\StepMania\src\Grade.cpp(56): note: Conversions between enumeration and floating point values are no longer allowed
This change maps the new grade tiers evenly to the 7 old grade tiers to trigger the correct sound files.
It also extends that mapping to the grade tiers used for playing cheering for the top few tiers.