GlobalCrashHandler does not pass exception to Layout

[jonathantwite]

GlobalCrashHandler incorrectly (I believe) sends the UnhandledExceptionEventArgs rather than the Exception to log.FatalAsync(...). This means that any custom layouts do not show the exception and you get different outputs depending on whether the log came from a log.Fatal() call, or an unhandled exception caught by GlobalCrashHandler.

await log.FatalAsync("The application crashed: " + e.Message, e);
should be:
await log.FatalAsync("The application crashed: " + e.Message, e.Exception);