- Add an `--organisation` flag to search a specific organisation.
- Wait for the GitHub API rate limit to reset before automatically
  retrying.
- Use (much) fewer API calls by using organisation-wide API PR searches
  rather than per-repository. This makes the rate limit easier to avoid
  and also makes things much faster (with the trade-off of showing a max
  PR count per-user rather than per-repository).
- Improve output to clarify when the max PR/commit count is reached.
- Move more logic and add more Sorbet signatures to the `GitHub` and
  `Utils::Git` modules.
- Rename a few GitHub API methods.
- Remove a lot of (now unused) `GitHub` module methods.
- Add, use a `Tap#full_repository` method.
- Add `formula-analytics` as a deprecated tap.