Fix for missing .npm
Merge pull request #163 from flibbertigibbet/feature/touch-npm

Fix for missing .npm file
Add filter for multiple indicator aggregations
Merge pull request #165 from WorldBank-Transport/feature/add-aggregation-filter

Add filter for multiple indicator aggregations
Remove truthiness check on route_type.

Zero is a valid value (for tram).
Merge pull request #167 from flibbertigibbet/feature/fix-route-type-truthiness

Remove truthiness check on route_type.