Also mention Access.key!

Author: José Valim

CHANGELOG.md

@@ -179,7 +179,7 @@ It is also possible to install escripts and archives by providing a Git/GitHub r
 
 #### Elixir
 
-  * [Access] Do not accept nils in `Access.key/1` and `Access.key/2` in favor of explicit default values
+  * [Access] Do not accept nils in `Access.key/1` and `Access.key/2` in favor of explicit default values (or Access.key!/1 if you expect the key to always be available)
   * [Float] Avoid multiple roundings in `Float.ceil/2`, `Float.floor/2` and `Float.round/2`
   * [Kernel] Don't crash in `macro_exported?/3` when dealing with Erlang modules
   * [Kernel] Ensure locals calls are rewritten when calling a local function or macro from inside a module

lib/elixir/lib/access.ex

@@ -361,7 +361,8 @@ defmodule Access do
   @doc false
   def key(key) do
     IO.warn "Access.key/1 is deprecated due to erratic behaviour for missing keys, " <>
-            "please use Access.key/2 instead with proper default values"
+            "please use Access.key/2 instead with proper default values " <>
+            "(or Access.key!/1 if you expect the key to always be available)"
 
     fn
       :get, data, next ->