pydata/pandas — pull request #7358 by toddrjen (2014-06-05 17:08:03+00:00)
Title: Add test for core.nanops and fix several bugs in nanops

This pull request accomplishes two main things:

1. It adds unit tests for ```nanops```
2. It fixes several bugs identified by the unit tests, specifically #7352, #7353, #7354, and #7357,