What is new?

Regionalization of biosphere flows in the regionalize_activity_foreground function (from regionalization.py), and added conditions to prevent the regionalization when unnecessary.
Correction of efficiency differences between the ESM and LCI databases (scale direct emissions accordingly) in the correct_esm_and_lca_efficiency_differences function (from adapt_efficiency.py).
Option to return the database instead of writing it (or both) in the create_esm_database (from double_counting.py) and create_new_database_with_esm_results (from esm_back_to_lca.py) functions.

What has changed?

concatenate_database function renamed to load_multiple_databases to avoid confusion with new merge_databases function (from utils.py).
unit_conversion.csv file has its columns From and To renamed to ESM and LCA for better clarity.
Reformatted and added new information to the double-counting removal output csv files.