Taggle: Blocks in <a>-tags are not parsed

Taggle: Blocks in <a>-tags are not parsed


In the following HTML-text, the children of the anchor tag are not delivered by Taggle:

```
<a>
<div>test</div>
</a>
```

Taggle outputs this as ```<a></a>```

Strictly not valid HTML, but frequently used in practice. Note that Taggle does not report any warnings / errors when parsing such input.

Suggested fix: allow blocks to be children of anchor-tags.