Handling for print URLs in parens for xrefgen.xsl
Handling for print URLs in chunk.xsl
Adding parameterized support for admonition headings.
Proper gentext handling for XREFs to sidebars.
Refactor handling for html4.structural elements (when enabled) to duplicate HTML5 structural semantic block elements as <div>s and move IDs to those <div>s to ensure better compatibility with EPUB 2-only ereaders.
Fixed url.in.parens handling for "stealth" XREFs; <a> elements with "XREF" hrefs but no corresponding data-type declaration.
Merge pull request #129 from oreillymedia/urls

Print URLs, admonition headings, EPUB 2 compatibility, and sidebar XREFs