import Sequence et al from collections.abc not typing

masque/builder/tools.py

@@ -3,7 +3,8 @@ Tools are objects which dynamically generate simple single-use devices (e.g. wir
 
 # TODO document all tools
 """
-from typing import Sequence, Literal, Callable, Any
+from typing import Literal, Any
+from collections.abc import Sequence, Callable
 from abc import ABCMeta  # , abstractmethod     # TODO any way to make Tool ok with implementing only one method?
 from dataclasses import dataclass