Testing RC versions of pandas in conda
I got this ANN email from the PyData mailing list from @jreback:

> I'm pleased to announce the availability of the second release candidate of Pandas 0.17.0.
> ...
> Best way to get this is to install via conda from our development channel. Builds for osx-64,linux-64,win-64 for Python 2.7, Python 3.4, and Python 3.5 (for osx/linux) are all available.
> 
> `conda install pandas -c pandas`

which is awesome! I can't wait for the new version to be out. I'd love to help with debugging, but when I tried to install the RC, I still got `0.16.2` in Python 3.5. See below:

```
$ conda install pandas -c pandas
Fetching package metadata: ........
Solving package specifications: ............
Package plan for installation in environment /Users/avazquez/anaconda3/envs/py35:

The following NEW packages will be INSTALLED:

    pandas: 0.16.2-np19py35_0

Proceed ([y]/n)? y

Linking packages ...
[ COMPLETE]
```

Same thing if I uninstall pandas first and then try `conda install pandas -c pandas` again. Any thoughts on what could be wrong?
