import Callable, Iterable from collections.abs instead of typing.

update tests to reflect changes in the API.

reorganise hatch envs

add black,isort configs to pyproject.toml

add pre-commit config

.pre-commit-config.yaml

@@ -0,0 +1,10 @@
+repos:
+  - repo: local
+    hooks:
+      - id: format
+        name: format
+        entry: hatch run style:fmt
+        language: system
+        pass_filenames: false
+        verbose: true
+        files: \.(py)$