Remove deprecated support for char lists

Author: alco

lib/hashids.ex

@@ -179,8 +179,6 @@ defmodule Hashids do
   defp parse_option!(:alphabet, kw) do
     list = case Keyword.fetch(kw, :alphabet) do
       :error -> @default_alphabet
-      # Deprecated. Left for compatibility with 1.0.
-      {:ok, list} when is_list(list) -> list
       {:ok, bin} when is_binary(bin) -> String.to_char_list(bin)
       _ ->
         message = "Alphabet has to be a string of at least 16 characters/codepoints."
@@ -194,8 +192,6 @@ defmodule Hashids do
   defp parse_option!(:salt, kw) do
     case Keyword.fetch(kw, :salt) do
       :error -> []
-      # Deprecated. Left for compatibility with 1.0.
-      {:ok, list} when is_list(list) -> list
       {:ok, bin} when is_binary(bin) -> String.to_char_list(bin)
       _ -> raise Hashids.Error, message: "Salt has to be a (possibly empty) string."
     end

test/test_helper.exs

@@ -38,9 +38,8 @@ defmodule HashidsTest.Helpers do
   end
 
   defp build_opts(salt, min_len, alphabet) do
-    salt = String.to_char_list(salt)
     len = String.to_integer(min_len)
-    alphabet_opt = if alphabet == "", do: [], else: [alphabet: String.to_char_list(alphabet)]
+    alphabet_opt = if alphabet == "", do: [], else: [alphabet: alphabet]
     alphabet_opt ++ [salt: salt, min_len: len]
   end