git-whennes 0.2.0

Find the commit that merged a commit into mainline
Documentation
# `git-whennes`

Find the commit where a given commit was merged into mainline. Inspired by
[git-whence](https://github.com/grosser/git-whence).

## Usage

See `git whence -h` for details on the CLI usage.

## Forges

Different forges are supported behind their relevant feature flags (e.g.
sourcehut's feature flag is `sourcehut`). Supporting a forge depends on the
model that the forge follows. For example, sourcehut doesn't have the concept
of pull requests as such so we can only provide a link to the merge commit in
the web UI. However, GitHub uses a pull request driven workflow so we can link
to the pull request that merged a given commit into mainline.