0.7.0.7 Security fix

While I was fixing some bugs in Zoph v0.8pre2, I spotted two possibilities for code injections, making Zoph vulnerable to a cross site scripting attack. I have fixed this bug and created a new release for the 0.7 stable branch: 0.7.0.7.

A fix for the v0.8pre2 release will be released soon.

Users of the 0.7 release or one of the 0.7.0.x release are encouraged to upgrade to this version. Users of a 0.7.x or 0.8pre release should either upgrade to the 0.8pre3 release when it comes available or apply this patch. This patch should work on any Zoph version.