dirstate: deprecate `__getitem__` access
If we want to drop `state` usage, we need to deprecate this.
Differential Revision: https://phab.mercurial-scm.org/D11544
[build-system]
requires = ["setuptools", "wheel"]
[tool.black]
line-length = 80
exclude = '''
build/
| wheelhouse/
| dist/
| packages/
| \.hg/
| \.mypy_cache/
| \.venv/
| mercurial/thirdparty/
'''
skip-string-normalization = true
quiet = true