Minor usability issue in nimble-parsec

mix.exs

defmodule NimbleParsecTest.MixProject do
  use Mix.Project

  def project do
    [
      app: :nimble_parsec_test,
      version: "0.1.0",
      elixir: "~> 1.7",
      start_permanent: Mix.env() == :prod,
      deps: deps()
    ]
  end

  # Run "mix help compile.app" to learn about applications.
  def application do
    [
      mod: {NimbleParsecTest, []},
      extra_applications: [:logger]
    ]
  end

  # Run "mix help deps" to learn about dependencies.
  defp deps do
    [
      {:nimble_parsec, "~> 0.2"}
      # {:dep_from_hexpm, "~> 0.3.0"},
      # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"},
    ]
  end
end

nimble_parsec_test.ex

defmodule NimbleParsecTest do
  use Application
  import NimbleParsec

  test = repeat(optional(utf8_char([?a])))
  defparsec :test, test

  def start(_type, _args) do
    IO.puts("Parsing...")
    IO.inspect(test("aaaaaa"))
  end
end