UTF-32 decoder optimization in Python 3.4

[Mark Lawrence]

 From http://docs.python.org/dev/whatsnew/3.4.html#optimizations "The 
UTF-32 decoder is now 3x to 4x faster.".  Does anybody have any 
references to this work?  All I can find is the 3.3 what's new which 
refers to PEP 393 (Flexible String Representation) optimizations as a 
result of work done by Serhiy Storchaka on issues 14624, 14738 and 15026.

-- 
Python is the second best programming language in the world.
But the best has yet to be invented.  Christian Tismer

Mark Lawrence