`leaflet` doesn't generate maps correctly

Given this configuration, in GameData/Sigma/Cartographer/SigmaCartographer.cfg:

@SigmaCartographer
{
    // level 0
    Maps
    {
        body = Kerbin
        colorMap = true
        satelliteMap = true
        oceanFloor = false
        width = 512
        tile = 256
        exportFolder = 0
        leaflet = true
    }
}

SigmaCartographer creates a directory at GameData/Sigma/Cartographer/PluginData/Kerbin/0/ColorMap which is empty. There's no other output as far as I can tell.

If colorMap is changed to false, SigmaCartographer creates a directory at GameData/Sigma/Cartographer/PluginData/Kerbin/0/SatelliteMap containing a single image file which has the map for the "eastern" half of Kerbin (pole to pole latitude, 0 to +180 degrees longitude).

If leaflet is set to false, SigmaCartographer creates a directory at GameData/Sigma/Cartographer/PluginData/Kerbin/0/SatelliteMap containing two image files. Tile0000.png has the map for the "western" half of Kerbin, while Tile0001.png has the map for the "eastern" half.

For what it's worth, the tiles from kerbalmaps.com and ksp.deringineur.net were in a directory structure that looked something like

kerbin
  sat
    0
      0
        0.png
      1
        0.png

The general form is {body}/{style}/{zoom}/{x}/{y}.png. body, style, and zoom would all come from config values, I expect.

Sigma88 / Sigma-Cartographer

`leaflet` doesn't generate maps correctly #19