Hi Tobias,

> You could
> 
>     (apply string-append (string-split version #\.))
> or
> 
>     (string-join (string-split version #\.) "")
> 
> I think I prefer the STRING-APPEND version but both are fine.

Thank you for the pointer! Patch updated.

Just a general note that there are some additional WOFF fonts in the
zip, but I think those are only relevant for websites so I am only
installing the truetype fonts. 

I also tested and verified that Zrythm can now find the font.