work around permanent flag
IE=edge for testing
importHTMLDocument

seems to work in IE8
new html5shiv support

+ extra template tests
removed base tag

seems to not work in IE8-9
moved sample dialog styling

IE8 fix
don't obscure lang select
basic HTMLElement.impl

use in role="template"
fragments disable copyAttributes
describeStream IE8
document fragment impl
Basic IE8 clone support
import HTML5 document to IE8