stop storing duplicate forecasts for caiso
add date_extracted to BPA and NE
add forecast_code to all BAs
add fraction_clean field to all BA models
tests passing with fraction_clean
remove fraction_high_carbon
remove fraction_wind
remove fraction_green
add total_MW field and remove total_gen and total_load attributes
Merge branch 'addfields' into develop
Merge branch 'develop'
add lxml back to pjm parser I guess