4.8.0

Clayton, Brandon Scott

@bclayton

41bf4d1e · Merge branch 'math' into 'main' · Aug 19, 2025

Changes:
- Add percent differences function
- Add differences function
- Add locations to coverage json metadata

Merge requests:
- https://code.usgs.gov/ghsc/nshmp/nshmp-utils-ts/-/merge_requests/262