Repo stats log options

[kyle-rader]

Invert the default behavior of repo stats to analyze first-parent commits by default, adding an --all flag to include the full commit history.

---

 

---

Note

Low Risk
Small, localized CLI flag/argument behavior change plus a version bump; no security-sensitive logic or data migrations involved.

Overview
repo stats now defaults to analyzing only first-parent commits, and adds an --all flag to include the full history (implemented by toggling git log --first-parent).

Updates help text/README messaging to match the new behavior, and bumps the crate version to 2.0.0 with corresponding Cargo.lock updates plus an agent guideline to run cargo build to refresh the lockfile.

^{Written by Cursor Bugbot for commit e10dbde. This will update automatically on new commits. Configure here.}

[cursor]

Cursor Agent can help with this pull request. Just @cursor in comments and I'll start working on changes in this branch.
_{Learn more about Cursor Agents}