Updated Elixir.

Trying to get fprof working, installing runtime_tools.

Author: rrcook

mix.exs

@@ -6,7 +6,7 @@ defmodule Brc.MixProject do
       app: :brc,
       escript: [main_module: Brc],
       version: "0.1.0",
-      elixir: "~> 1.15",
+      elixir: "~> 1.16",
       start_permanent: Mix.env() == :prod,
       deps: deps()
     ]
@@ -15,7 +15,7 @@ defmodule Brc.MixProject do
   # Run "mix help compile.app" to learn about applications.
   def application do
     [
-      extra_applications: [:logger]
+      extra_applications: [:logger, :runtime_tools]
     ]
   end