Aggregate data to a certain level dictated by inputs. Internal function.

Helper function for lehdr which aggregates block geographies based on the block id.

aggregate_lodes_df(lehdr_df, geoid_to, aggname)

Arguments

lehdr_df	Data frame (tibble) to be aggregated
geoid_to	The number of characters to do the aggregation on from the geoid
aggname	What the level is called, like "tract" etc