The URDB API reply has a few attributes that the underlying SSC code can handle, but are ignored by ResourceTools.URDBv7_to_ElectricityRates such as:

• lookback range
• lookback percent
• lookback months

Add these to a function in resource tools. Would it be best to create a new function URDBv8_to_ElectricityRates or upgrade the existing function without re-naming?