Support Stata 14 format (format 118)
Hello, I'm just leaving this here, might try to pick this up as a weekend project soon.

The beautiful people at stata have released documentation for the format here: http://www.stata.com/help.cgi?dta

And the old format is here: 
http://www.stata.com/help.cgi?dta_117

The docs say that it'll highlight changes between 118 and 117 but I couldn't find any such references. One thing I noticed is that they now have utf-8 support! Yay!

As a workaround for now, stata users who want to use stata 14 can use "saveold" which creates stata 13 files, which pandas supports.
