Merge branch 'master' into 'master'

Mark /MM as not DXCC. Closes #99

Closes #99

See merge request gridtracker.org/gridtracker!112

package.nw/lib/gt.js

@@ -12174,6 +12174,9 @@ function callsignToDxcc(insign)
     var end = parts.length - 1;
     if (ancPrefixes.includes(parts[end]))
     {
+      if (parts[end].toUpperCase() == "MM") {
+        return -1;
+      }
       parts.pop();
       end = parts.length - 1;
     }