[Cython] Cython 0.16 RC 1

[mark florisson]

Yet another release candidate, this will hopefully be the last before
the 0.16 release. You can grab it from here:
http://wiki.cython.org/ReleaseNotes-0.16

There were several fixes for the numpy attribute rewrite, memoryviews
and fused types. Accessing the 'base' attribute of a typed ndarray now
goes through the object layer, which means direct assignment is no
longer supported.

If there are any problems, please let us know.