Current implementation is wrong (or unclear) for a Polygon geometry

The current Polygon examples are wrong. The code is fine.

The GeoJSON specification says:

• A Polygon is a list of linear rings.
• A linear ring is list of coordinates points.

So a typical TFCat Polygon should write:

{"coordinates": [ 
   [ 
      [653984400.0, 26.69173], 
      [653987760.0, 18.646618], 
      [653987940.0, 26.390978], 
      [653984400.0, 26.69173]
   ]
], "type": "Polygon"}

Whereas current examples are:

{"coordinates": [ 
   [653984400.0, 26.69173], 
   [653987760.0, 18.646618], 
   [653987940.0, 26.390978], 
   [653984400.0, 26.69173]
], "type": "Polygon"}