Add a TODO on the latest HISTORY.md entry

Also disable version updater on Iris benchmark source code files. It may runs ever faster than before if you started the benchmarks immediately after the banner  👍


Former-commit-id: a55dc1e0b658d7386229c32ba6953b1ea60f2872

_benchmarks/iris-mvc/main.go

@@ -8,5 +8,8 @@ import (
 func main() {
 	app := iris.New()
 	app.Controller("/api/values/{id}", new(controllers.ValuesController))
-	app.Run(iris.Addr(":5000"))
+
+	// 24 August 2017: Iris has a built'n version updater but we don't need it
+	// when benchmarking...
+	app.Run(iris.Addr(":5000"), iris.WithoutVersionChecker)
 }