The link text goes through TextConverter, which escapes `&` to `&`,
while the href is the decoded attribute value, so `$href === $text` never
held for a URL with a query string like `?a=1&b=2`. Undo that escaping
before comparing. Only `&` is undone: `<` and `>` cannot appear in an
autolink, so those links keep the inline form.
Fixes#248
The ordered-list numbering used intval() on the "start" attribute inside a
truthiness check, so a valid start="0" was treated as absent and the list
restarted numbering at 1. Detect an explicit numeric start attribute with
is_numeric() instead, so <ol start=\"0\"> renders as 0. 1. ...
dualfroz