djot-0.1.0.0: test/thematic_breaks.test

```
hello

- - -

there
.
<p>hello</p>
<hr>
<p>there</p>
```

```
hello

   **   **

there
.
<p>hello</p>
<hr>
<p>there</p>
```

```
hello

   *-*-*-*

there
.
<p>hello</p>
<hr>
<p>there</p>
```

```
hello
   *-*-*-*
there
.
<p>hello
<strong>-</strong>-<strong>-</strong>
there</p>
```