Current we can get status for the commit (comparing parent). But can't get patch text.

I would like to have commit.patch to get patch text. Result will be similar to git diff shell command.

git diff <c1> <c2>

all_commits = repo.iter_commits('master')
for commit in all_commits:
    print(commit.stats)

If the community is okay with this addition, i can work on this and raise a PR.

Thanks in advance,
Durai Pandian