flexmonster d.ts update

types/flexmonster/index.d.ts

@@ -180,6 +180,7 @@ declare namespace Flexmonster {
         dataSourceInfo?: string;
         dataSourceType?: string;
         fieldSeparator?: string;
+        thousandSeparator?: string;
         filename?: string;
         ignoreQuotedLineBreaks?: boolean;
         proxyUrl?: string;