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ggmapcn 0.3.0

NEW FEATURES

• New function: annotation_graticule()
  Adds a projection-aware global graticule system with customizable spacing, labeling, and automatic antimeridian handling.

MAJOR IMPROVEMENTS

• Major redesign of geom_world()
  Fully rebuilt global basemap system with bundled world polygons, coastlines, and boundaries; improved antimeridian handling; more reliable behavior under complex projections; and clearer, more consistent styling controls.

• Major redesign of the external data workflow (check_geodata())
  The data-management system has been rewritten to meet CRAN size limits and improve reliability. Required datasets are now located or retrieved automatically using a priority search (local directories → package extdata → user cache), with retry, resume, mirror fallbacks, and fully graceful failure. All mapping functions now call this workflow internally.

IMPROVEMENTS

• More robust CRS parsing, including reliable extraction of lon_0 from PROJ strings.
• Better stability with coord_sf(), especially for global projections and shifted central meridians.
• Updated documentation and examples, including usage of the new world dataset (world_countries.rda, world_coastlines.rda, world_boundaries.rda).
• More consistent rendering across projections such as Robinson, Mollweide, and shifted longitude systems.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
Health stats visible at Monitor.