List validation raises an error

[MMore]

Hello,

I was using your example:

data = %{
  :race => "Khajiit",
  :name => "Bob",
  :level => 6,
  "potions" => "Skooma"
}
schema = %{
  :race => :string,
  :name => :string,
  :level => :int,
  :gender => [:atom, :not_required],
  "potions" => [:list, :string],
}
Skooma.valid?(data, schema)

I've expected getting an {:error, message} tuple but got the following raised error:

** (Protocol.UndefinedError) protocol Enumerable not implemented for "Skooma" of type BitString. This protocol is implemented for the following type(s): Ecto.Adapters.SQL.Stream, Postgrex.Stream, DBConnection.Stream, DBConnection.PrepareStream, HashSet, Range, Map, Function, List, Stream, Date.Range, HashDict, GenEvent.Stream, MapSet, File.Stream, IO.Stream
    (elixir 1.11.4) lib/enum.ex:1: Enumerable.impl_for!/1
    (elixir 1.11.4) lib/enum.ex:141: Enumerable.reduce/3
    (elixir 1.11.4) lib/enum.ex:3473: Enum.reverse/1
    (elixir 1.11.4) lib/enum.ex:3066: Enum.to_list/1
    (elixir 1.11.4) lib/enum.ex:3166: Enum.with_index/2
    (skooma 0.2.0) lib/skooma.ex:74: Skooma.validate_list/3
    (skooma 0.2.0) lib/skooma.ex:12: Skooma.valid?/3
    (elixir 1.11.4) lib/enum.ex:1415: anonymous fn/3 in Enum.map/2
    (stdlib 3.14.1) maps.erl:233: :maps.fold_1/3
    (elixir 1.11.4) lib/enum.ex:2209: Enum.map/2
    (skooma 0.2.0) lib/map.ex:37: Skooma.Map.value_handler/3
    (skooma 0.2.0) lib/map.ex:8: Skooma.Map.validate_map/3
    (skooma 0.2.0) lib/skooma.ex:11: Skooma.valid?/3