Changes to Render a map (keyless, cacheable URL)

added the optional property choropleth/format to the response with the 200 status

added the new label_lists_ignored enum value to the warnings/items/code response property for the response status 200

added the new labels_overlap enum value to the warnings/items/code response property for the response status 200

added the new legend_heading_dropped enum value to the warnings/items/code response property for the response status 200

added the new midpoint_ignored enum value to the warnings/items/code response property for the response status 200

added the new nodata_low_contrast enum value to the warnings/items/code response property for the response status 200

added the optional property choropleth/midpoint to the response with the 200 status

added the optional property choropleth/regionsWithoutData to the response with the 200 status

added the optional property warnings/items/count to the response with the 200 status

added the optional property warnings/items/keys to the response with the 200 status

added the optional property warnings/items/shortened to the response with the 200 status