- Fix Coordinate converter regression handling 2 coordinate items as 3 (#58)

Author: Col-E

src/main/java/de/micromata/opengis/kml/v_2_2_0/CoordinatesConverter.java

@@ -11,7 +11,7 @@
 public final class CoordinatesConverter
     extends XmlAdapter<String, List<Coordinate>>
 {
-    private static final Pattern COORDINATE_GROUP = Pattern.compile("(?<=,|\\s|^)(\\S+?,\\S+?,\\S+?)");
+    private static final Pattern COORDINATE_GROUP = Pattern.compile("(?<=,|\\s|^)([-.\\d]+,[-.\\d]+(?:,[-.\\d]+)?)");
 
     @Override
     public String marshal(final List<Coordinate> dt)