Rename Processed_upgrades.json to Processed_thermal_upgrades.json after @ann-sherin changed in PyDSS.
Replace xlrd by using openpyxl engine. New xlrd only support .xls format.
Fix an issue reported by Michael Emmanuel. The new_line_cost and upgraded_line_cost were not aggregated if isinstance of pd.Series. @ann-sherin Please make sure it's correct with sum aggregation.
sum
aggregation.