added "fuel supply for methane vehicles"

Author: matthieu-str

mescal/data/mapping_new_products_to_CPC.csv

@@ -44,6 +44,7 @@ forest residue,23140: Other cereal grain products (including corn flakes),equals
 fuel supply for cng vehicles,"12020: Natural gas, liquefied or in the gaseous state",contains,Activity
 fuel supply for diesel vehicles,33370: Fuel oils n.e.c.,contains,Activity
 fuel supply for hydrogen vehicles,"34210: Hydrogen, nitrogen, oxygen, carbon dioxide and rare gases; inorganic oxygen compounds of non-metals n.e.c.",contains,Activity
+fuel supply for methane vehicles,"12020: Natural gas, liquefied or in the gaseous state",contains,Activity
 "fuel cell system, 1 kWe, proton exchange membrane (PEM)",46410: Primary cells and primary batteries,equals,Product
 geothermal heat plant,"43913: Refrigerating and freezing equipment and heat pumps, except household type equipment",equals,Product
 hard coal IGCC power plant 450MW,53262: Power plants,equals,Product