Bump version

Author: entertainyou

README.md

@@ -24,7 +24,7 @@ def application do
 end
 
 def deps do
-  [{:slack, "~> 0.23.2"}]
+  [{:slack, "~> 0.23.3"}]
 end
 ```
 

mix.exs

@@ -4,7 +4,7 @@ defmodule Slack.Mixfile do
   def project do
     [
       app: :slack,
-      version: "0.23.2",
+      version: "0.23.3",
       elixir: "~> 1.7",
       elixirc_paths: elixirc_paths(Mix.env()),
       name: "Slack",