The function generate_toc_id isn't setup for unicode

[kylerove]

I want to be able to dynamically create anchors to header elements outside the TOC, ideally using the built-in Jekyll slugify: latin filter. Example:

<h2 id="rin">Riñón</h2>

The anchor id drops non-latin characters. Sadly, this behavior doesn't match slugify filter options of pretty, ascii, or latin. Because the routines do not match, I cannot dynamically create a link that specifies this link. Of course, there are ways around this, but would be cool if the "slugs" created by this plugin could match jekyll slugify output with a setting or by default.