0.23.3 (2015-09-29)

Bugs fixed

• Invalid C code for some builtin methods. This fixes ticket 856 again.
• Incorrect C code in helper functions for PyLong conversion and stringdecoding. This fixes ticket 863, ticket 864 and ticket 865.Original patch by Nikolaus Rath.
• Large folded or inserted integer constants could use too small Cinteger types and thus trigger a value wrap-around.

Other changes

• The coroutine and generator types of Cython now also register directlywith the Coroutine and Generator ABCs in the backports_abcmodule if it can be imported. This fixes ticket 870.