Use `GenServer.reply/2`

[manuel-rubio]

The use of this dependency is completely unnecessary because, when you get this:

def handle_call(msg, from, state) do
  Task.start(fn ->
    # perform some calculations
    GenServer.reply(from, reply)
  end)
  {:noreply, state}
end

And that's all. The use of this code is overkill for a simple use case which is included inside of GenServer.