Volgo_git_backend.Num_statusThis is exposed for tests and low-level usage.
val parse_lines_exn : lines:string list -> Volgo.Vcs.Num_status.tParsing the output of "git diff --num-status REV..REV".
val parse_line_exn : line:string -> Volgo.Vcs.Num_status.Change.tParse only one line. Exposed for tests.