Add support for forks #88
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This change is the first step in making `git-appraise` support the concept of `forks`: remote repositories used by contributors who cannot push to the main repository. This initial change only adds the user documentation around forks. This allows us to scope out the feature while making sure that the end user experience is simple, consistent, and complete. Later commits will add tests and implement the new feature.
…ith the `request` reviewer flag
…ork when there are no changes to a fork
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This repository implements distributed tracking and management of git forks by storing the list of forks in the repository itself. The idea behind this was first proposed as a feature of [`git-appraise`](google/git-appraise#88), but is being split out into a standalone feature after it became clear that the functionality was useful in more contexts than just for code review.
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This change adds the concept of "forks" to git-appraise.
The underlying idea is that each contributor can have their own personal repository to which they push, and that the overarching repository can be viewed as a compilation of those separate repositories.
In essence, we are adding symbolic links to other repositories inside the repo itself, and then resolving those links on the client side.
Each entry in this collection of symbolic links is what we call a "fork", and the collection includes all of the information that a client needs to know how to fetch from each fork and which notes should be merged from each fork.
By doing this, we unlock the ability to perform reviews across multiple remote repositories, and even entirely separate hosting providers.
For example, one contributor could have a repository that they push to on GitHub, another can have one on GitLab, and a third could have one stored in GitTorrent, and all three could push to their respective repositories while reviewing code from each other.
This fixes #71