revlog: drop the df argument to `rawdata`
The intend of this argument is better filled by the `revlog.reading` or
`revlog._writing` context. So we drop it to leave rooms for further cleanup and
improvements.
[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