sxd_html 0.1.2

Add HTML parsing support to sxd_document. This enables to evaluate XPath expressions on HTML documents.
Documentation 
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#[cfg(test)]
mod tests {
    #[test]
    fn parse_simple() {
        let contents = "<!DOCTYPE html><html><div>hello<br>bye</div></html>";
        let (package, errors) = sxd_html::parse_html_with_errors(contents);
        assert_eq!(0, errors.len());

        let root = package.as_document().root();
        let root = root.children()[0]
            .element()
            .expect("html should be root element");

        assert_eq!("html", root.name().local_part());

        let children = root.children();
        // head and body are added if not present
        assert_eq!(2, children.len());

        let head = children[0].element().unwrap();
        let body = children[1].element().unwrap();

        assert_eq!("head", head.name().local_part());
        assert_eq!(0, head.children().len());

        let children = body.children();
        assert_eq!("body", body.name().local_part());
        assert_eq!(1, children.len());

        let c0 = children[0].element().unwrap();
        let children = c0.children();
        assert_eq!("div", c0.name().local_part());
        assert_eq!(3, children.len());

        let c0 = children[0].text().unwrap();
        let c1 = children[1].element().unwrap();
        let c2 = children[2].text().unwrap();

        assert_eq!("hello", c0.text());

        assert_eq!("br", c1.name().local_part());
        assert_eq!(0, c1.children().len());

        assert_eq!("bye", c2.text());
    }
}