 
   @doc """
   Returns a new dict where only the keys in `keys` from `dict` are
-  included. Any non-member keys are ignored.
+  included. 
+  Any non-member keys are ignored.
 
   ## Examples
 


  @doc """
  Returns an empty dict of the same type as `dict`.
  """
  @spec empty(t) :: t
  def empty(dict) do

  end

  @doc """
  Merges the given `enum` into `dict`. If one of the `enum` entries
  already exists in `dict`, the given function is invoked to resolve
  the conflict.

  ## Examples

