Switch logging off by default

Author: govert

Source/ExcelDna.IntelliSense.Host/ExcelDna.IntelliSense.Host-AddIn.xll.config

@@ -3,7 +3,7 @@
   <system.diagnostics>
     <trace autoflush="true" indentsize="4"/>
     <sources>
-      <source name="ExcelDna.IntelliSense" switchValue="All">
+      <source name="ExcelDna.IntelliSense" switchValue="Off">
         <listeners>
           <!--<remove name="Default" />-->
           <!--<add name="LogDisplay" type="ExcelDna.Logging.LogDisplayTraceListener,ExcelDna.Integration">