Extending the styleguide

Hi,

first of all - thanks for this promising module. I am theoretically a big fan of living styleguides and currently I am searching for good ways to implement such.

To me it seems that this module works perfect to define common elements in Drupal. First question: the function hook_styleguide() takes a "theme" key for each element where theme functions can be provided. Is it possible to define custom template files as well? Esspecially in Drupal 8 there is so much theming moving into Twig templates.

Another question: node tyes with different view modes, some field in context of a special node type/ node view mode or whole Paragrpaphs elements as well as custom template files defined in my custom modules are examples of elements, which might follow specific design rules as well. So is it possible to include for example a field or a node as example into the styleguide in any way?

Best,
Tobias