Return unit level aggregation instead of power plant level

[KaneM2]

I was wondering is there a way of returning unit level aggregation of the power plants without the vertical aggregation? e.g instead of returning Belleville, Nuclear, 2620 MW there would be two rows , Belleville 1 , Nuclear , 1310 MW and Belleville 2 , Nuclear , 1310 MW

[fneum]

I think most of the matching depends on aggregated units. A hack would be in the config.yaml to mark datasets that have individual units as aggregated_units: True. Any one dataset, e.g. pm.data.GEM() would return non-aggregated units.

[fneum]

Ok, I implemented something experimental for this in #256 and tested it for nuclear power plants.