Cython and Python 3

by Haoyu Bai for Python Software Foundation

This project will improve the support for Python 3 in Cython, and use the new features in Python 3 to improve Cython's user-friendliness in its pure Python mode. This includes several bug fixes, as well as the use of Python 3 function annotation and class decorators to provide type information for Cython's pure Python mode.