- Encode correctly Float Type using QVariant/JSON (introduced in Qt 4.6)

src/json.h

@@ -47,6 +47,7 @@ namespace json {
                 case QVariant::LongLong:
                 case QVariant::UInt:
                 case QVariant::ULongLong:
+                case QMetaType::Float:
       return v.value<QString>();
                 case QVariant::String:
       {