Loosen hpax requirements. Fix #409

mix.exs

@@ -32,7 +32,7 @@ defmodule Bandit.MixProject do
       {:thousand_island, "~> 1.0"},
       {:plug, "~> 1.14"},
       {:websock, "~> 0.5"},
-      {:hpax, "~> 1.0.0"},
+      {:hpax, "~> 1.0"},
       {:telemetry, "~> 0.4 or ~> 1.0"},
       {:req, "~> 0.3", only: [:dev, :test]},
       {:machete, ">= 0.0.0", only: [:dev, :test]},