This is a follow-up on https://github.com/openmaptiles/openmaptiles/pull/1604 . Seminole Nation is shown in the screenshot there with rank 3 while based on area it should be 1. This PR fixes `area_rank()` function to handle areas greater than 160000000, e.g. this fixes#1622 .
Co-authored-by: Paul Norman <penorman@mac.com>
This PR adds indigenous lands to the `boundary` layer by adding new area features for these objects, along with generalization up to z4. It borrows heavily from the technical processing chain of the `park` layer.
I added new `class`, `name`, and `name:xx` attributes to the boundary layer, in order to support the new area features. Should we (or someone extending this schema) come up with new objects to place in the boundary layer in the future, `class` would support additional categories.
