Ring Run course maps

Route illustrations: Ring Run. North-up Web Mercator, generated offline.
These are recreational simulator illustrations, not navigation charts.

OpenFreeMap: https://openfreemap.org/
OpenMapTiles: https://openmaptiles.org/
Map data: (c) OpenStreetMap contributors, Open Database License (ODbL).
https://www.openstreetmap.org/copyright
https://opendatacommons.org/licenses/odbl/1-0/

Shaded relief: Mapzen Terrain Tiles, hosted by AWS Open Data.
https://registry.opendata.aws/terrain-tiles/
Contains elevation data from multiple public sources, including USGS, NASA
SRTM and other regional datasets. The full source list and applicable
attributions are maintained at:
https://github.com/tilezen/joerd/blob/master/docs/attribution.md

Only finished raster maps are included in Ring Run. Map download and rendering
happen when building the package; the simulator does not download map tiles.