Map data attribution
====================

british-isles-counties.svg combines two sources:
- UK historic counties: boundary data provided by the Historic County
  Borders Project (The Historic Counties Trust),
  https://county-borders.co.uk/ - Definition B, simplified resolution,
  WGS84.
- Republic of Ireland: Natural Earth 1:10m admin-1 units (public domain,
  https://www.naturalearthdata.com/), dissolved into the 26 historic
  counties.
Converted to SVG with Douglas-Peucker simplification and an
equirectangular projection, paths keyed by Chapman county code.

The Historic County Borders Project provides its data free of charge for
personal, educational, non-commercial and commercial use. Acknowledgement:

  "This mapping made use of data provided by the Historic County Borders
   Project" (https://county-borders.co.uk/)

This acknowledgement is also carried in the plugin readme and inside the
SVG file itself. Do not remove it when regenerating the asset.
