Correctly handle 'pt' font-size CSS declarations. Since 0.9.5.1 they where incorrectly treated the same as 'px' values.
0.9.6
Set the default parser to be 'html' in `wordinserter.render`. Also improve handling of elements with invalid children, so for example this markup correctly renders: `<h1><strong>Test</strong></h1>`
0.9.5.1
Support non-float CSS font-sizes
0.9.5
Correctly support the background color in display: block elements.
0.9.4.6
Actually fix headings not having bookmarks applied.
0.9.4.5
Fix headings not having bookmarks applied if they have an `id` attribute set.