Changelog and version bump

Author: binaryseed

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## v1.5.6
+
+- Bug Fix: [Handle invalid batch request structure](https://github.com/absinthe-graphql/absinthe_plug/pull/255)
+
 ## v1.5.5
 
 - Bug Fix: [Don't wipe out an existing pubsub value in context](https://github.com/absinthe-graphql/absinthe_plug/pull/249)

lib/absinthe/plug/request.ex

@@ -56,6 +56,7 @@ defmodule Absinthe.Plug.Request do
   # Plug puts parsed params under the "_json" key when the
   # structure is not a map; otherwise it's just the keys themselves,
   # and they may sit in the body or in the params
+
   defp is_batch?(params) do
     Map.has_key?(params, "_json") && is_list(params["_json"])
   end

mix.exs

@@ -1,7 +1,7 @@
 defmodule Absinthe.Plug.Mixfile do
   use Mix.Project
 
-  @version "1.5.5"
+  @version "1.5.6"
 
   def project do
     [