Merge pull request #17 from gamepoet/elixir-0.13.2

String.to_char_list! is now deprecated

lib/lager.ex

@@ -54,7 +54,7 @@ defmodule Lager do
   defp log(level, format, args, caller) do
     {name, _arity} = caller.function || {:unknown, 0}
     module = caller.module || :unknown
-    if is_binary(format), do: format = String.to_char_list!(format)
+    if is_binary(format), do: format = List.from_char_data!(format)
     if should_log(level) do
       dispatch(level, module, name, caller.line, format, args)
     end