Changes in version 1.0.0 (2026-10-31)                  

  - First CRAN release.
  - calculate_travel_time() now uses terra::costDist() internally,
    removing the dependencies on the superseded raster and gdistance
    packages. Results are effectively the same; see the validation
    article for details of the small differences.
  - Cells that cannot be reached from any of points (e.g. because they
    are cut off by NA cells) are now NA in the output of
    calculate_travel_time(). Previously they were Inf.
  - calculate_travel_time() now drops (with a warning) any points that
    fall outside friction_surface, and errors if none fall within it.
  - calculate_travel_time() now works with a single point supplied as a
    one-row matrix or a one-point SpatVector. Previously these errored.
  - ext_matrix(), and so get_friction_surface(), now accept integer as
    well as double vectors for extent.
  - calculate_travel_time() and get_friction_surface() now correctly
    return the existing file when filename already exists and overwrite
    = FALSE, as documented. Previously they warned and then errored.
  - get_friction_surface() now fails gracefully, returning NULL with a
    warning, if the friction surface cannot be downloaded.
  - Removed unused dependency on lifecycle.