List support issues

This is not rendered as a bulleted list in termimad (via clima) (it ends up being italics or something):

```md
* item
* item
```

while this is:

```md
* item
* item
```

The `-` and `+` characters are also not supported for lists.

Reproduce the behavior described in termimad via clima with the indented, plain, '-' and '+' Markdown list examples from the issue. Trace the Markdown parsing and rendering entry points, then verify that all three list markers render as bulleted lists rather than italics or plain text.

Written by the indexing model from the issue text.