Complete rewrite of bottleneck package
I have completely rewritten the bottleneck package. Since it is an optional dependency of pandas I thought you might want to test it before I release.

Release notes are here: https://github.com/kwgoodman/bottleneck/blob/master/RELEASE.rst
Branch: master 

Please report results here: https://github.com/kwgoodman/bottleneck/issues/96
