syntax matchers don't account for sub-lists that switch from unordered to numbered and vice-versa

[unixsuperhero]

i'm not sure if this plugin explicitly supports textile v1. this feature may or may not have been around since then. i'm also not sure if this feature is only available in specific flavors of textile. all i know, is some syntax references describe it as a feature. i just wanted to make you aware before i submit a pull request.

example textile:

* this is the top level
* another at the top level
*# sub-list for the 2nd item, but numbered (1.)
*# this should be "2."
* third at the top level

assumed html render:

<ul>
  <li>this is the top level</li>
  <li>
    another at the top level
    <ol>
      <li>sub-list for the 2nd item, but numbered (1.)</li>
      <li>this should be "2."</li>
    </ol>
  </li>
  <li>third at the top level</li>
</ul>