style upgrading subproject for naru - OSM Vector Tile experiment style upgrade
https://unvt.github.io/mame/#15.68/41.322155/19.824567/-85.6/57
Tested with kokoromi-western-balkans-tiles.
'mame' means practical in traditional Japanese, like in 少将起きて、小舎人童を走らせて、すなはち車にて、まめなるものさまざまにもて来たり.