Feature Request: rename parsing

[alikhamesy]

Hey so I was wondering if I can add rename parsing to the tool?

I was thinking we can read rename ... lines and set a boolean files.renamed to true. Willing to make the PR.

Perhaps also a field for the similarity index?

Something along the lines of adding this test:

  it("should parse rename diff", function () {
    const diff = `\
diff --git a/test.txt b/text2.txt
similarity index 100%
rename from test.txt
rename to text2.txt
`;
    const files = parse(diff);
    expect(files.length).toBe(1);
    const [file] = files;
    expect(file.from).toBe("test.txt");
    expect(file.to).toBe("test2.txt");
    expect(file.chunks.length).toBe(0);
    expect(file.renamed).toBe(true);
  });

[sergeyt]

@alikhamesy all sounds good, please go ahead 😄