Fixing column_format argument passing, #9402
closes #9402 

pls add a release note (bug fix section).
 pls squash, then ping when green.
 I'm in transit today, no internet. I'll do that back home tonight or tomorrow. Best

Le 31 août 2015 01:53:26 GMT+01:00, Jeff Reback notifications@github.com a écrit :

> pls squash, then ping when green.
> 
> ---
> 
> Reply to this email directly or view it on GitHub:
> https://github.com/pydata/pandas/pull/10944#issuecomment-136224665

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Envoyé de mon appareil Android avec K-9 Mail. Veuillez excuser ma brièveté.
 Found a connection :) 

I messed up the rebase somewhat, so there's an extra useless commit, but for the rest I think I did what you asked.

I plan on fixing some more `to_latex` bugs this week, shall I keep on doing this on that branch and PR, or is it better to make a branch for each bug?
 I'll squash, don't worry.

always make new features on separate branches. thxs
 merged via https://github.com/pydata/pandas/commit/fb42766b3eb55155d67548d364672d254be7ffb6

thanks!
