were optimized and now run about one-third faster. The inner
loops were also optimized for \class{dict} with performance
boosts to \method{keys()}, \method{values()}, \method{items()},
-\method{\iterkeys()}, \method{\itervalues()}, and \method{iteritems()}.
+\method{iterkeys()}, \method{itervalues()}, and \method{iteritems()}.
\item The machinery for growing and shrinking lists was optimized
for speed and for space efficiency. Small lists (under eight elements)