The Map class can now generate an XML string that contains the map data.
Exporting the XML string to a file is not yet available. Some map values are
also not filled in with valid data because the data is not yet available
in the Map class.

Creation of the XML string is done using Ariel Flesler's XMLWriter
JavaScript class.
Forgot to update declaration file to reflect new function.
Map now pulls fraction values and starting point from the graph.