Include CSS <link> in HTML chunk <head>s if $css.filename is specified.
Look for either "creator" or "author" in <meta> @name attr when pulling creators for EPUB.
Merge pull request #69 from oreillymedia/xmlschema

Allow mixed content for <video> and <audio> elements
Merge branch 'master' of github.com:oreillymedia/HTMLBook into htmlbook-xsl
Removing variables from xsl:key "use" attributes to be in compliance with XSLT 1.0 spec.
Merge pull request #68 from oreillymedia/htmlbook-xsl

CSS <link> handling for chunked output and tweak to EPUB metadata handling
Merge pull request #71 from oreillymedia/htmlbook-xsl

Removing variables from xsl:key "use" attributes in indexgen.xsl
Merge pull request #72 from oreillymedia/xmlschema

Support for adding <math> or <svg> elements in inline contexts whenever possible
Updated spec for footnotes.