Import Chocolatey History

[dahlbyk]

Self-imposed prerequisite to #184 (cc @ferventcoder).

Here's the bit of LibGit2Sharp I used to filter down to clean, useful history:

// git clone https://github.com/ferventcoder/chocolatey-packages.git C:\Temp\posh-git-choco
public void Rewrite()
{
    using (var repo = new Repository(@"C:\Temp\posh-git-choco"))
    {
        repo.Refs.RewriteHistory(new RewriteHistoryOptions
        {
            CommitTreeRewriter = MovePoshGit,
            PruneEmptyCommits = true,
        }, repo.Head.Commits);
    }
}

private static TreeDefinition MovePoshGit(Commit commit)
{
    var poshgit = commit.Tree["manual/poshgit"] ?? commit.Tree["poshgit"];
    return poshgit == null
               ? new TreeDefinition()
               : new TreeDefinition()
                     .Add("chocolatey", (Tree)poshgit.Target);
}

/cc @nulltoken @ben because LG2S RewriteHistory API is awesome.

[nulltoken]

/cc @nulltoken @ben because LG2S RewriteHistory API is awesome.

@dahlbyk 💟 @ben made it happen (and I'm so thankful to him for this) ! But you worked on it a tad, didn't you? 😉

[ben]

😘❤️

[dahlbyk]

Team effort 😀