Computation times

00:10.026 total execution time for 6 files from gallery/maps:

Example	Time	Mem (MB)
Highlight country, continent and state polygons (country_polygons.py)	00:07.088	0.0
Tile maps (tilemaps.py)	00:01.545	0.0
Choropleth map (choropleth_map.py)	00:00.589	0.0
Political boundaries (borders.py)	00:00.353	0.0
Shorelines (shorelines.py)	00:00.227	0.0
Color land and water (land_and_water.py)	00:00.223	0.0