add clearer error message (runtime error) for users who feeds gRASPA with a restart file with fractional molecule, but didn't use CBCFProbability 1.0.
Fix read restart functionality for fractional molecules: currently, it always returns runtime error: wrong number of bins. I guess things are sort of broken, while CBCFC has not been updated in the past months.
Hilal tried to use the RASPA-2 restart file in gRASPA.
It is an issue because the header part of the restart file cannot be processed correctly in gRASPA. Need to fix.