Run this with `cargo run -- -T -F -s specs/regression.txt`.

Regression tests for issues on the github issue tracker.

ISSUE #133

```````````````````````````````` example
see the [many] [articles] [on] [QuickCheck].

[many]: https://medium.com/@jlouis666/quickcheck-advice-c357efb4e7e6
[articles]: http://www.quviq.com/products/erlang-quickcheck/
[on]: https://wiki.haskell.org/Introduction_to_QuickCheck1
[QuickCheck]: https://hackage.haskell.org/package/QuickCheck
.
<p>see the 
  <a href="https://medium.com/@jlouis666/quickcheck-advice-c357efb4e7e6">many</a> 
  <a href="http://www.quviq.com/products/erlang-quickcheck/">articles</a> 
  <a href="https://wiki.haskell.org/Introduction_to_QuickCheck1">on</a> 
  <a href="https://hackage.haskell.org/package/QuickCheck">QuickCheck</a>.
</p>
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ISSUE #135

```````````````````````````````` example
[![debug-stub-derive on crates.io][cratesio-image]][cratesio]
[![debug-stub-derive on docs.rs][docsrs-image]][docsrs]

[cratesio-image]: https://img.shields.io/crates/v/debug_stub_derive.svg
[cratesio]: https://crates.io/crates/debug_stub_derive
[docsrs-image]: https://docs.rs/debug_stub_derive/badge.svg?version=0.3.0
[docsrs]: https://docs.rs/debug_stub_derive/0.3.0/
.
<p><a href="https://crates.io/crates/debug_stub_derive"><img src="https://img.shields.io/crates/v/debug_stub_derive.svg" alt="debug-stub-derive on crates.io" /></a>
<a href="https://docs.rs/debug_stub_derive/0.3.0/"><img src="https://docs.rs/debug_stub_derive/badge.svg?version=0.3.0" alt="debug-stub-derive on docs.rs" /></a></p>
````````````````````````````````

ISSUE #145

```````````````````````````````` example
|  Title A  |  Title B  |
| --------- | --------- |
| Content   | Content   |

|  Title A  |  Title B  |  Title C  |  Title D  |
| --------- | --------- | --------- | ---------:|
| Content   | Content   | Conent    | Content   |
.
<table><thead><tr><th>Title A  </th><th>Title B  </th></tr></thead><tbody>
<tr><td>Content   </td><td>Content   </td></tr>
</tbody></table>
<table><thead><tr><th>Title A  </th><th>Title B  </th><th>Title C  </th><th align="right">Title D  </th></tr></thead><tbody>
<tr><td>Content   </td><td>Content   </td><td>Conent    </td><td align="right">Content   </td></tr>
</tbody></table>
````````````````````````````````

Unicode punctuation and emphasis

```````````````````````````````` example
foo§__(bar)__
.
<p>foo§<strong>(bar)</strong></p>
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