[Cython] ANN: Cython 0.13 released!](http://www.mail-archive.com/cython-dev@codespeak.net/msg09503.html) - There's a new release for Cython (formerly PyRex). And the language for Python extensions is becoming increasingly complete. This makes it much easier to create performance-critical parts of the code because you can work in a very Python-like language.