Changes in version 0.0.06                        

  - Release "06" adds measo_regions06 (with _ll, _coastline and
    _ll_coastline forms) and measo_names06. The boundaries are those of
    version 05. In version 06:
    
      - one row per region (20 rows): the WestPacific regions, split at
        the anti-meridian in 05, are one feature each
      - name, label, sector, zone, and fill are on the features; label
        is the full name, zone then sector, e.g. "Antarctic Atlantic"
      - fill is the colour of each region in the MEASO Summary for
        Policymakers (Constable et al. 2023, Figure 5): each sector has
        its own hue, light to dark from the Antarctic to the Northern
        zone
      - a current crs

  - Version 05 is kept as it was released. Its colours have sectors
    sharing palettes (WestPacific with Atlantic, EastPacific with
    CentralIndian), and the first WPA row of measo_names has a fill that
    doesn't match the second (an error, kept as released).

  - Files for version 06 in 'inst/extdata': GeoParquet and FlatGeobuf in
    polar LAEA, longitude/latitude and EPSG:3031, GeoJSON in
    longitude/latitude, and a QGIS style. The version 05 geopackages are
    unchanged.

  - Added references to the MEASO Summary for Policymakers, McCormack et
    al. (2021), and earlier MEASO documents (citation("measoshapes"),
    ?measo_regions06).

  - Known: the MEASO Summary for Policymakers describes the Northern
    zone as "no further north than 40°S"; in the Atlantic (9°W to 10°E)
    the Northern region (AON) reaches 38.3°S.

                      Changes in version 0.0.05.1                       

  - Extend the shapes southerer.

  - Added colours.

                       Changes in version 0.0.05                        

  - Release "05" creates "_coastline" versions in polar and in
    longitude/latitude. There are now dummy polygons in the north for
    each sector, for classifying data that is outside the primary
    regions.

                       Changes in version 0.0.04                        

  - Release "04", renames "WestAtlantic" to "Atlantic"