Use ruff instead of flake8 and isort

.github/workflows/tests.yml

@@ -22,6 +22,4 @@ jobs:
       - name: Launch tests
         run: python -m pytest
       - name: Check coding style
-        run: python -m flake8
-      - name: Check imports order
-        run: python -m isort . --check --diff
+        run: python -m ruff check

pyproject.toml

@@ -41,7 +41,7 @@ Donation = 'https://opencollective.com/courtbouillon'
 
 [project.optional-dependencies]
 doc = ['sphinx', 'sphinx_rtd_theme']
-test = ['pytest', 'isort', 'flake8']
+test = ['pytest', 'ruff']
 
 [tool.flit.sdist]
 exclude = ['.*']
@@ -54,6 +54,5 @@ include = ['tests/*', 'pyphen/*']
 exclude_lines = ['pragma: no cover', 'def __repr__', 'raise NotImplementedError']
 omit = ['.*']
 
-[tool.isort]
-default_section = 'FIRSTPARTY'
-multi_line_output = 4
+[tool.ruff.lint]
+select = ['E', 'F', 'I']