oreillymedia/HTMLBook — pull request #103 by sandersk (2013-11-15 19:24:07+00:00)
Title: Fixed bug with OPF image <item> generation

Fixed bug that was causing multiple `
` elements to be generated in the OPF manifest for the same image if that image was referenced in more than one `` `src` attribute.

Also did some miscellaneous refactoring and cleanup to make XSL more test friendly and potentially more compatible with XSLT processors less tolerant than xsltproc.