[Koha-devel] Upgrading Koha's license?

I have been working on incorporating some features of the Bootstrap framework into Koha (http://twitter.github.com/bootstrap). It offers some nice features that can help us finish getting rid of YUI. However, Bootstrap's license is Apache 2.0 which I'm told is incompatible with Koha's GPL2 license. What do we need to do to make inclusion of Bootstrap possible? Thanks Owen -- Web Developer Athens County Public Libraries http://www.myacpl.org