defunkt/dotjs — pull request #81 by simon (2012-10-02 08:43:42+00:00)
Title: Bump manifest version to 2

Q3 2013 Chrome will stop supporting manifest version 1. There is no
rush, but it's better to change it now than never. ;)

http://developer.chrome.com/extensions/manifestVersion.html#manifest-v1-2012q3

I haven't built a new version of the extension though.