No author URL in 4.0.9 (Breaking change)

[Gargron]

undefined method `url' for #<Microformats::ParserResult:0x00005556e27ddaa0>

when accessing mf2.entry.comment.author.url in 4.0.9. This is a breaking change from 4.0.7 where it worked fine.

[dissolve]

I was able to reproduce this issue with a random post from your account, and it looks to be caused by the microformats spec having changed the implied u-url rules. Since u-photo exists, it no longer implies a u-url.
I realize now that should have been a version bump as that is actually a breaking change.

[dissolve]

Example html to reproduce.

`
<div class="h-entry">
<div class="h-cite p-comment">
<a class="status__display-name p-author h-card" rel="noopener" href="https://site.example/@AwesomeUser">
<img width="48" height="48" alt="" class="u-photo account__avatar" src="https://site.example/user-photo.png" />
<strong class="display-name__html p-name emojify">AwesomeUser</strong>
</a>
</div>
</div>

`

Not sure if we should roll back the version at this point
@jgarber623 thoughts?

Going forward, I would recommend specifying the u-url as no new parser will get this url value.
If you wrap move the classes out of the A tag to a containing tag it will work.

<div class="h-entry">
<div class="h-cite p-comment">
<div class="p-author h-card">
<a class="status__display-name u-url" rel="noopener" href="https://site.example/@AwesomeUser">
<img width="48" height="48" alt="" class="u-photo account__avatar" src="https://site.example/user-photo.png" />
<strong class="display-name__html p-name emojify">AwesomeUser</strong>
</a>
</div>
</div>
</div>`