test-revlog: adds a new root revision with a delta against nullrev
We add a revision with null parent but that is not the first revision of the
revlog. It make it a different a case that is worthy of testing.
[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