Fixes mods broken by Factorio 2.1.20 fuel changes: converts removed ItemPrototype::fuel_category to fuel_categories, and gives items with a fuel_value but no category the old default ('chemical').
Lua libraries for use by other mods and submods that are parts of a larger mod.
Counted when a user downloads a mod release for the first time. Before Nov 2021 it counted everytime a user clicked the mods download button.
Counted when a user downloads a mod for the first time. Has no data before Dec 2022