Use HttpUtility.HtmlEncode in ExceptionFormatter.FormatStack

[dkuppitz]

Instead of

Buffer += Ex.StackTrace.Replace(Environment.NewLine, "<br />");

you should use

Buffer += HttpUtility.HtmlEncode(Ex.StackTrace).Replace(Environment.NewLine, "<br />");

Otherwise it's impossible to see generic types when you view the details on loggr.net.