What's new in PyPy 2.1
put and array.put
Pickling of numpy arrays and dtypes (including record dtypes)
Remove multimethods in the arraymodule
Fixed bug when switching stacklets from a C callback
Remove multi-methods on sets
Implement subarrays for numpy
Remove multi-methods on dict
Remove remaining multi-methods on list
Stacklet support for ARM, enables _continuation support
Remove multi-methods on tuple
Remove multi-methods on iterators
Added list of resops to the pypyjit on_abort hook.
Speeds up the stdlib logging module
Adds a couple convenient format specifiers to operationerrfmt
Skip and fix some non-translated (own) tests for win32 builds
Add the '_obj' attribute on ctypes pointer() and byref() objects
Fix a segfault in argsort when sorting by chunks on multidim numpypy arrays (mikefc)
Improve performance of str(long).
Add view to ndarray and zeroD arrays, not on dtype scalars yet
fix segfault caused by iterating over empty ndarrays
Faster sets for objects
Inline the fast path of id() and hash()
Adapt package.py script to compile CFFI tk extension. Add a --without-tk switch to optionally skip it.