Minor refinements

[XingerTang]

Goal

Minor clean-up tasks

Proposed approach

• Remove .gitattribute file completely
• Typo: Github $\to$ GitHub

  • AlphaPeel/docs/source/introduction.rst

    Line 9 in 0412048

    |Software| is available as open-source from `Github <https://github.com/AlphaGenes/AlphaPeel>`_ website and can be easily installed using ``pip install AlphaPeel`` (the latest release).

• Remove outdated Changelog.md
• Fix Replace A Whalen's email #207

Scope

.gitattribute
docs/source/introduction
Changelog.md
pyproject.toml

Done when

PR open within a week

[gregorgorjanc]

Done in #234