Fix/better spec enforcing (#41)

* revamp

* consolidate

* version bump

tests/unit/conftest.py

@@ -1,10 +1,5 @@
 """Pytest fixtures for unit tests."""
 
-
-
-from pathlib import Path
-from tempfile import NamedTemporaryFile
-from typing import Iterable, Mapping, Optional
 from collections.abc import Callable
 
 import pytest