Compare Two Commit Diff Stats

Produces a response in JSON format with a record for every pathmodified, including information on the type of the change and thenumber of lines added and removed.#### Single commit specIf the `spec` argument to this API is a single commit, the diff isproduced against the first parent of the specified commit.#### Two commit specTwo commits separated by `..` may be provided as the `spec`, e.g.,`3a8b42..9ff173`. When two commits are provided and th...