Pygit2 是一个基于 Python 的 libgit2 绑定。PyGit2 0.21.3 发布，此版本现已提供下载，更新内容如下：
重要改进：
Now Repository.blame(...) returns Oid instead of string#413
New Reference.set_target(...) replaces the Reference.target setter and Reference.log_append(...)#414
New Repository.set_head(...) replaces the Repository.head setter#414
Repository.merge(...) now uses the SAFE_CREATE strategy by default#417
其他改进：
New Remote.delete()#418#420
New Repository.write_archive(...)#421
Now Repository.checkout(...) accepts branch objects#408
Fix refcount leak in remotes#403#404#419
Various fixes to clone_repository(...)#399#411#425#426
Fix build error in Python 3#401
Now pip install pygit2 installs cffi first#380#407
Add support for pypy3#422
Documentation improvements#398#409
